<?xml version="1.0" encoding="us-ascii"?>
<!--XBRL document created with Toppan Merrill Bridge  9.6.8042.36810 -->
<!--Based on XBRL 2.1-->
<!--Created on: 2/22/2022 9:08:40 PM-->
<!--Modified on: 2/22/2022 9:08:40 PM-->
<link:linkbase xmlns="http://www.xbrl.org/2003/linkbase" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrldt="http://xbrl.org/2005/xbrldt">
  <roleRef xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel" roleURI="http://www.xbrl.org/2009/role/negatedLabel" />
  <roleRef xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTotalLabel" roleURI="http://www.xbrl.org/2009/role/negatedTotalLabel" />
  <roleRef xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTerseLabel" roleURI="http://www.xbrl.org/2009/role/negatedTerseLabel" />
  <link:labelLink xlink:type="extended" xlink:role="http://www.xbrl.org/2003/role/link">
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_CoverAbstract" xlink:label="dei_CoverAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CoverAbstract" xlink:to="dei_CoverAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_CoverAbstract_lbl" xml:lang="en-US">Cover [Abstract]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_DocumentInformationTable" xlink:label="dei_DocumentInformationTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentInformationTable" xlink:to="dei_DocumentInformationTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentInformationTable_lbl" xml:lang="en-US">Document Information [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="us-gaap_StatementClassOfStockAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementClassOfStockAxis" xlink:to="us-gaap_StatementClassOfStockAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementClassOfStockAxis_lbl" xml:lang="en-US">Class of Stock [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="us-gaap_ClassOfStockDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfStockDomain" xlink:to="us-gaap_ClassOfStockDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfStockDomain_lbl" xml:lang="en-US">Class of Stock [Domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockMember" xlink:label="us-gaap_CommonStockMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockMember" xlink:to="us-gaap_CommonStockMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockMember_lbl" xml:lang="en-US">Common Stock [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RedeemablePreferredStockMember" xlink:label="us-gaap_RedeemablePreferredStockMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RedeemablePreferredStockMember" xlink:to="us-gaap_RedeemablePreferredStockMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RedeemablePreferredStockMember_lbl" xml:lang="en-US">Redeemable Preferred Stock [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_DocumentInformationLineItems" xlink:label="dei_DocumentInformationLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentInformationLineItems" xlink:to="dei_DocumentInformationLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentInformationLineItems_lbl" xml:lang="en-US">Document Information [Line Items]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_DocumentType" xlink:label="dei_DocumentType" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentType" xlink:to="dei_DocumentType_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentType_lbl" xml:lang="en-US">Document Type</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_DocumentAnnualReport" xlink:label="dei_DocumentAnnualReport" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentAnnualReport" xlink:to="dei_DocumentAnnualReport_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentAnnualReport_lbl" xml:lang="en-US">Document Annual Report</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_DocumentPeriodEndDate" xlink:label="dei_DocumentPeriodEndDate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentPeriodEndDate" xlink:to="dei_DocumentPeriodEndDate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentPeriodEndDate_lbl" xml:lang="en-US">Document Period End Date</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_DocumentTransitionReport" xlink:label="dei_DocumentTransitionReport" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentTransitionReport" xlink:to="dei_DocumentTransitionReport_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentTransitionReport_lbl" xml:lang="en-US">Document Transition Report</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityFileNumber" xlink:label="dei_EntityFileNumber" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityFileNumber" xlink:to="dei_EntityFileNumber_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityFileNumber_lbl" xml:lang="en-US">Entity File Number</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityRegistrantName" xlink:label="dei_EntityRegistrantName" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityRegistrantName" xlink:to="dei_EntityRegistrantName_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityRegistrantName_lbl" xml:lang="en-US">Entity Registrant Name</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityIncorporationStateCountryCode" xlink:label="dei_EntityIncorporationStateCountryCode" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityIncorporationStateCountryCode" xlink:to="dei_EntityIncorporationStateCountryCode_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xml:lang="en-US">Entity Incorporation, State or Country Code</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityTaxIdentificationNumber" xlink:label="dei_EntityTaxIdentificationNumber" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityTaxIdentificationNumber" xlink:to="dei_EntityTaxIdentificationNumber_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xml:lang="en-US">Entity Tax Identification Number</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityAddressAddressLine1" xlink:label="dei_EntityAddressAddressLine1" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressAddressLine1" xlink:to="dei_EntityAddressAddressLine1_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityAddressAddressLine1_lbl" xml:lang="en-US">Entity Address, Address Line One</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityAddressCityOrTown" xlink:label="dei_EntityAddressCityOrTown" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressCityOrTown" xlink:to="dei_EntityAddressCityOrTown_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityAddressCityOrTown_lbl" xml:lang="en-US">Entity Address, City or Town</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityAddressStateOrProvince" xlink:label="dei_EntityAddressStateOrProvince" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressStateOrProvince" xlink:to="dei_EntityAddressStateOrProvince_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityAddressStateOrProvince_lbl" xml:lang="en-US">Entity Address, State or Province</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityAddressPostalZipCode" xlink:label="dei_EntityAddressPostalZipCode" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressPostalZipCode" xlink:to="dei_EntityAddressPostalZipCode_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityAddressPostalZipCode_lbl" xml:lang="en-US">Entity Address, Postal Zip Code</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_CityAreaCode" xlink:label="dei_CityAreaCode" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CityAreaCode" xlink:to="dei_CityAreaCode_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_CityAreaCode_lbl" xml:lang="en-US">City Area Code</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LocalPhoneNumber" xlink:label="dei_LocalPhoneNumber" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_LocalPhoneNumber" xlink:to="dei_LocalPhoneNumber_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_LocalPhoneNumber_lbl" xml:lang="en-US">Local Phone Number</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_Security12bTitle" xlink:label="dei_Security12bTitle" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_Security12bTitle" xlink:to="dei_Security12bTitle_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_Security12bTitle_lbl" xml:lang="en-US">Title of 12(b) Security</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_TradingSymbol" xlink:label="dei_TradingSymbol" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_TradingSymbol" xlink:to="dei_TradingSymbol_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_TradingSymbol_lbl" xml:lang="en-US">Trading Symbol</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_SecurityExchangeName" xlink:label="dei_SecurityExchangeName" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_SecurityExchangeName" xlink:to="dei_SecurityExchangeName_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_SecurityExchangeName_lbl" xml:lang="en-US">Security Exchange Name</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityWellKnownSeasonedIssuer" xlink:label="dei_EntityWellKnownSeasonedIssuer" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityWellKnownSeasonedIssuer" xlink:to="dei_EntityWellKnownSeasonedIssuer_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityWellKnownSeasonedIssuer_lbl" xml:lang="en-US">Entity Well-known Seasoned Issuer</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityVoluntaryFilers" xlink:label="dei_EntityVoluntaryFilers" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityVoluntaryFilers" xlink:to="dei_EntityVoluntaryFilers_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityVoluntaryFilers_lbl" xml:lang="en-US">Entity Voluntary Filers</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityCurrentReportingStatus" xlink:label="dei_EntityCurrentReportingStatus" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCurrentReportingStatus" xlink:to="dei_EntityCurrentReportingStatus_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityCurrentReportingStatus_lbl" xml:lang="en-US">Entity Current Reporting Status</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityInteractiveDataCurrent" xlink:label="dei_EntityInteractiveDataCurrent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityInteractiveDataCurrent" xlink:to="dei_EntityInteractiveDataCurrent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityInteractiveDataCurrent_lbl" xml:lang="en-US">Entity Interactive Data Current</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityFilerCategory" xlink:label="dei_EntityFilerCategory" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityFilerCategory" xlink:to="dei_EntityFilerCategory_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityFilerCategory_lbl" xml:lang="en-US">Entity Filer Category</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntitySmallBusiness" xlink:label="dei_EntitySmallBusiness" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntitySmallBusiness" xlink:to="dei_EntitySmallBusiness_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntitySmallBusiness_lbl" xml:lang="en-US">Entity Small Business</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityEmergingGrowthCompany" xlink:label="dei_EntityEmergingGrowthCompany" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityEmergingGrowthCompany" xlink:to="dei_EntityEmergingGrowthCompany_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityEmergingGrowthCompany_lbl" xml:lang="en-US">Entity Emerging Growth Company</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_IcfrAuditorAttestationFlag" xlink:label="dei_IcfrAuditorAttestationFlag" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_IcfrAuditorAttestationFlag" xlink:to="dei_IcfrAuditorAttestationFlag_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_IcfrAuditorAttestationFlag_lbl" xml:lang="en-US">ICFR Auditor Attestation Flag</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityShellCompany" xlink:label="dei_EntityShellCompany" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityShellCompany" xlink:to="dei_EntityShellCompany_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityShellCompany_lbl" xml:lang="en-US">Entity Shell Company</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityPublicFloat" xlink:label="dei_EntityPublicFloat" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityPublicFloat" xlink:to="dei_EntityPublicFloat_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityPublicFloat_lbl" xml:lang="en-US">Entity Public Float</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="dei_EntityCommonStockSharesOutstanding" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCommonStockSharesOutstanding" xlink:to="dei_EntityCommonStockSharesOutstanding_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityCommonStockSharesOutstanding_lbl" xml:lang="en-US">Entity Common Stock, Shares Outstanding</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityCentralIndexKey" xlink:label="dei_EntityCentralIndexKey" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCentralIndexKey" xlink:to="dei_EntityCentralIndexKey_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityCentralIndexKey_lbl" xml:lang="en-US">Entity Central Index Key</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_CurrentFiscalYearEndDate" xlink:label="dei_CurrentFiscalYearEndDate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CurrentFiscalYearEndDate" xlink:to="dei_CurrentFiscalYearEndDate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xml:lang="en-US">Current Fiscal Year End Date</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_DocumentFiscalYearFocus" xlink:label="dei_DocumentFiscalYearFocus" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentFiscalYearFocus" xlink:to="dei_DocumentFiscalYearFocus_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentFiscalYearFocus_lbl" xml:lang="en-US">Document Fiscal Year Focus</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="dei_DocumentFiscalPeriodFocus" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentFiscalPeriodFocus" xlink:to="dei_DocumentFiscalPeriodFocus_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xml:lang="en-US">Document Fiscal Period Focus</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_AmendmentFlag" xlink:label="dei_AmendmentFlag" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AmendmentFlag" xlink:to="dei_AmendmentFlag_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_AmendmentFlag_lbl" xml:lang="en-US">Amendment Flag</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_AuditorName" xlink:label="dei_AuditorName" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AuditorName" xlink:to="dei_AuditorName_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_AuditorName_lbl" xml:lang="en-US">Auditor Name</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_AuditorFirmId" xlink:label="dei_AuditorFirmId" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AuditorFirmId" xlink:to="dei_AuditorFirmId_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_AuditorFirmId_lbl" xml:lang="en-US">Auditor Firm ID</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_AuditorLocation" xlink:label="dei_AuditorLocation" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AuditorLocation" xlink:to="dei_AuditorLocation_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_AuditorLocation_lbl" xml:lang="en-US">Auditor Location</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="us-gaap_StatementOfFinancialPositionAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfFinancialPositionAbstract" xlink:to="us-gaap_StatementOfFinancialPositionAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementOfFinancialPositionAbstract_lbl" xml:lang="en-US">Statement Of Financial Position [Abstract]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementTable" xlink:label="us-gaap_StatementTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementTable" xlink:to="us-gaap_StatementTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementTable_lbl" xml:lang="en-US">Statement [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementLineItems" xlink:label="us-gaap_StatementLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_StatementLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementLineItems_lbl" xml:lang="en-US">Statement [Line Items]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="us-gaap_AssetsAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsAbstract" xlink:to="us-gaap_AssetsAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetsAbstract_lbl" xml:lang="en-US">Assets [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_AssetsAbstract_lbl" xml:lang="en-US">ASSETS</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RealEstateInvestmentPropertyNetAbstract" xlink:label="us-gaap_RealEstateInvestmentPropertyNetAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateInvestmentPropertyNetAbstract" xlink:to="us-gaap_RealEstateInvestmentPropertyNetAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateInvestmentPropertyNetAbstract_lbl" xml:lang="en-US">Real Estate Investment Property, Net [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_RealEstateInvestmentPropertyNetAbstract_lbl" xml:lang="en-US">Real Estate Investments</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Land" xlink:label="us-gaap_Land" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Land" xlink:to="us-gaap_Land_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Land_lbl" xml:lang="en-US">Land</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_Land_lbl" xml:lang="en-US">Land</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InvestmentBuildingAndBuildingImprovements" xlink:label="us-gaap_InvestmentBuildingAndBuildingImprovements" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentBuildingAndBuildingImprovements" xlink:to="us-gaap_InvestmentBuildingAndBuildingImprovements_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InvestmentBuildingAndBuildingImprovements_lbl" xml:lang="en-US">Investment Building and Building Improvements</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_InvestmentBuildingAndBuildingImprovements_lbl" xml:lang="en-US">Buildings</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation" xlink:label="us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation" xlink:to="us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation_lbl" xml:lang="en-US">Real Estate Investment Property, Accumulated Depreciation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation_lbl" xml:lang="en-US">Less accumulated depreciation</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RealEstateInvestmentPropertyExcludingPropertyUnderDevelopmentNetOfAccumulatedDepreciation" xlink:label="adc_RealEstateInvestmentPropertyExcludingPropertyUnderDevelopmentNetOfAccumulatedDepreciation" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RealEstateInvestmentPropertyExcludingPropertyUnderDevelopmentNetOfAccumulatedDepreciation" xlink:to="adc_RealEstateInvestmentPropertyExcludingPropertyUnderDevelopmentNetOfAccumulatedDepreciation_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RealEstateInvestmentPropertyExcludingPropertyUnderDevelopmentNetOfAccumulatedDepreciation_lbl" xml:lang="en-US">Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments but excluding property under development.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RealEstateInvestmentPropertyExcludingPropertyUnderDevelopmentNetOfAccumulatedDepreciation_lbl" xml:lang="en-US">Real Estate Investment Property, Excluding Property Under Development, Net of Accumulated Depreciation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="adc_RealEstateInvestmentPropertyExcludingPropertyUnderDevelopmentNetOfAccumulatedDepreciation_lbl" xml:lang="en-US">Real estate investments excluding property under development</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DevelopmentInProcess" xlink:label="us-gaap_DevelopmentInProcess" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DevelopmentInProcess" xlink:to="us-gaap_DevelopmentInProcess_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DevelopmentInProcess_lbl" xml:lang="en-US">Development In Process</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DevelopmentInProcess_lbl" xml:lang="en-US">Property under development</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RealEstateInvestmentPropertyNet" xlink:label="us-gaap_RealEstateInvestmentPropertyNet" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateInvestmentPropertyNet" xlink:to="us-gaap_RealEstateInvestmentPropertyNet_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateInvestmentPropertyNet_lbl" xml:lang="en-US">Real Estate Investment Property, Net, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RealEstateInvestmentPropertyNet_lbl" xml:lang="en-US">Net Real Estate Investments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_RealEstateInvestmentPropertyNet_lbl" xml:lang="en-US">Net Real Estate Investments</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RealEstateHeldForSaleNetTotal" xlink:label="adc_RealEstateHeldForSaleNetTotal" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RealEstateHeldForSaleNetTotal" xlink:to="adc_RealEstateHeldForSaleNetTotal_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RealEstateHeldForSaleNetTotal_lbl" xml:lang="en-US">The amount of real estate investments, net of accumulated depreciation .</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RealEstateHeldForSaleNetTotal_lbl" xml:lang="en-US">Real Estate Held for Sale net Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_RealEstateHeldForSaleNetTotal_lbl" xml:lang="en-US">Real Estate Held for Sale, net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="adc_RealEstateHeldForSaleNetTotal_lbl" xml:lang="en-US">Total Real Estate Held for Sale, net</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xml:lang="en-US">Cash and Cash Equivalents, at Carrying Value, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xml:lang="en-US">Cash and cash equivalents</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xml:lang="en-US">Cash and Cash Equivalents</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EscrowDeposit" xlink:label="us-gaap_EscrowDeposit" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EscrowDeposit" xlink:to="us-gaap_EscrowDeposit_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EscrowDeposit_lbl" xml:lang="en-US">Escrow Deposit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EscrowDeposit_lbl" xml:lang="en-US">Cash held in escrow</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_EscrowDeposit_lbl" xml:lang="en-US">Cash Held in Escrows</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountsReceivableNet" xlink:label="us-gaap_AccountsReceivableNet" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsReceivableNet" xlink:to="us-gaap_AccountsReceivableNet_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsReceivableNet_lbl" xml:lang="en-US">Accounts Receivable, Net, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccountsReceivableNet_lbl" xml:lang="en-US">Accounts Receivable - Tenants, net</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetAcquiredInPlaceLeases" xlink:label="us-gaap_FiniteLivedIntangibleAssetAcquiredInPlaceLeases" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetAcquiredInPlaceLeases" xlink:to="us-gaap_FiniteLivedIntangibleAssetAcquiredInPlaceLeases_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetAcquiredInPlaceLeases_lbl" xml:lang="en-US">Finite-Lived Intangible Asset, Acquired-In-Place Leases</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_FiniteLivedIntangibleAssetAcquiredInPlaceLeases_lbl" xml:lang="en-US">Lease Intangibles, net of accumulated amortization of $180,532 and $125,995 at December 31, 2021 and December 31, 2020, respectively</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherAssets" xlink:label="us-gaap_OtherAssets" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssets" xlink:to="us-gaap_OtherAssets_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherAssets_lbl" xml:lang="en-US">Other Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OtherAssets_lbl" xml:lang="en-US">Other Assets, net</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Assets" xlink:label="us-gaap_Assets" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Assets" xlink:to="us-gaap_Assets_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Assets_lbl" xml:lang="en-US">Assets, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_Assets_lbl" xml:lang="en-US">Total Assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesAbstract" xlink:label="us-gaap_LiabilitiesAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAbstract" xlink:to="us-gaap_LiabilitiesAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesAbstract_lbl" xml:lang="en-US">Liabilities [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LiabilitiesAbstract_lbl" xml:lang="en-US">LIABILITIES</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SecuredDebt" xlink:label="us-gaap_SecuredDebt" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SecuredDebt" xlink:to="us-gaap_SecuredDebt_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SecuredDebt_lbl" xml:lang="en-US">Secured Debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SecuredDebt_lbl" xml:lang="en-US">Mortgage Notes Payable, net</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnsecuredDebt" xlink:label="us-gaap_UnsecuredDebt" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnsecuredDebt" xlink:to="us-gaap_UnsecuredDebt_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UnsecuredDebt_lbl" xml:lang="en-US">Unsecured Debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_UnsecuredDebt_lbl" xml:lang="en-US">Unsecured Term Loans, net</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SeniorNotes" xlink:label="us-gaap_SeniorNotes" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SeniorNotes" xlink:to="us-gaap_SeniorNotes_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SeniorNotes_lbl" xml:lang="en-US">Senior Notes</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_SeniorNotes_lbl" xml:lang="en-US">Senior Unsecured Notes, net</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LineOfCredit" xlink:label="us-gaap_LineOfCredit" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCredit" xlink:to="us-gaap_LineOfCredit_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCredit_lbl" xml:lang="en-US">Long-term Line of Credit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LineOfCredit_lbl" xml:lang="en-US">Unsecured Revolving Credit Facility</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DividendsPayableCurrentAndNoncurrent" xlink:label="us-gaap_DividendsPayableCurrentAndNoncurrent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsPayableCurrentAndNoncurrent" xlink:to="us-gaap_DividendsPayableCurrentAndNoncurrent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendsPayableCurrentAndNoncurrent_lbl" xml:lang="en-US">Dividends Payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DividendsPayableCurrentAndNoncurrent_lbl" xml:lang="en-US">Dividends and Distributions Payable</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent" xlink:to="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_lbl" xml:lang="en-US">Accounts Payable and Accrued Liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_lbl" xml:lang="en-US">Accounts Payable, Accrued Expenses, and Other Liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BelowMarketLeaseNet" xlink:label="us-gaap_BelowMarketLeaseNet" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BelowMarketLeaseNet" xlink:to="us-gaap_BelowMarketLeaseNet_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BelowMarketLeaseNet_lbl" xml:lang="en-US">Below Market Lease, Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:label="us-gaap_BelowMarketLeaseNet_lbl" xml:lang="en-US">Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_BelowMarketLeaseNet_lbl" xml:lang="en-US">Lease Intangibles, net of accumulated amortization of $29,726 and $24,651 at December 31, 2021 and December 31, 2020, respectively</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Liabilities" xlink:label="us-gaap_Liabilities" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_Liabilities_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Liabilities_lbl" xml:lang="en-US">Liabilities, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_Liabilities_lbl" xml:lang="en-US">Total Liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:to="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_lbl" xml:lang="en-US">Stockholders' Equity, Including Portion Attributable To Noncontrolling Interest [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_lbl" xml:lang="en-US">EQUITY</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="us-gaap_PreferredStockValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockValue" xlink:to="us-gaap_PreferredStockValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockValue_lbl" xml:lang="en-US">Preferred Stock, Value, Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockValue_lbl" xml:lang="en-US">Preferred Stock, $.0001 par value per share, 4,000,000 shares authorized, 7,000 shares Series A outstanding, at stated liquidation value of $25,000 per share, at December 31, 2021, no shares issued and outstanding at December 31, 2020</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockValue" xlink:label="us-gaap_CommonStockValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockValue" xlink:to="us-gaap_CommonStockValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockValue_lbl" xml:lang="en-US">Common Stock, Value, Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockValue_lbl" xml:lang="en-US">Common stock, $.0001 par value, 180,000,000 and 90,000,000 shares authorized, 71,285,311 and 60,021,483 shares issued and outstanding at December 31, 2021 and December 31, 2020, respectively</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="us-gaap_AdditionalPaidInCapital" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdditionalPaidInCapital" xlink:to="us-gaap_AdditionalPaidInCapital_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdditionalPaidInCapital_lbl" xml:lang="en-US">Additional Paid in Capital, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_AdditionalPaidInCapital_lbl" xml:lang="en-US">Additional paid-in-capital</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedDistributionsInExcessOfNetIncome" xlink:label="us-gaap_AccumulatedDistributionsInExcessOfNetIncome" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedDistributionsInExcessOfNetIncome" xlink:to="us-gaap_AccumulatedDistributionsInExcessOfNetIncome_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccumulatedDistributionsInExcessOfNetIncome_lbl" xml:lang="en-US">Accumulated Distributions in Excess of Net Income, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_AccumulatedDistributionsInExcessOfNetIncome_lbl" xml:lang="en-US">Dividends in excess of net income</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xml:lang="en-US">Accumulated Other Comprehensive Income (Loss), Net of Tax, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xml:lang="en-US">Accumulated other comprehensive income (loss)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="us-gaap_StockholdersEquity" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_StockholdersEquity_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquity_lbl" xml:lang="en-US">Stockholders Equity Attributable to Parent, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_StockholdersEquity_lbl" xml:lang="en-US">Total Equity - Agree Realty Corporation</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MinorityInterest" xlink:label="us-gaap_MinorityInterest" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MinorityInterest" xlink:to="us-gaap_MinorityInterest_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MinorityInterest_lbl" xml:lang="en-US">Stockholders' Equity Attributable To Noncontrolling Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_MinorityInterest_lbl" xml:lang="en-US">Non-controlling interest</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:to="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xml:lang="en-US">Stockholders Equity, Including Portion Attributable to Noncontrolling Interest, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xml:lang="en-US">Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xml:lang="en-US">Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xml:lang="en-US">Total Equity</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_LiabilitiesAndStockholdersEquity_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xml:lang="en-US">Liabilities and Equity, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xml:lang="en-US">Total Liabilities and Equity</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SeriesAPreferredStockMember" xlink:label="us-gaap_SeriesAPreferredStockMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SeriesAPreferredStockMember" xlink:to="us-gaap_SeriesAPreferredStockMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SeriesAPreferredStockMember_lbl" xml:lang="en-US">Series A Preferred Stock [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_lbl" xml:lang="en-US">Finite-Lived Intangible Assets, Accumulated Amortization</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_lbl" xml:lang="en-US">Finite-lived intangible assets, accumulated amortization (in dollars)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BelowMarketLeaseAccumulatedAmortization" xlink:label="us-gaap_BelowMarketLeaseAccumulatedAmortization" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BelowMarketLeaseAccumulatedAmortization" xlink:to="us-gaap_BelowMarketLeaseAccumulatedAmortization_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BelowMarketLeaseAccumulatedAmortization_lbl" xml:lang="en-US">Below Market Lease, Accumulated Amortization</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BelowMarketLeaseAccumulatedAmortization_lbl" xml:lang="en-US">Below market lease, accumulated amortization (in dollars)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PreferredStockParOrStatedValuePerShare" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockParOrStatedValuePerShare" xlink:to="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xml:lang="en-US">Preferred Stock, Par or Stated Value Per Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xml:lang="en-US">Preferred stock, par value (in dollars per share)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PreferredStockSharesAuthorized" xlink:label="us-gaap_PreferredStockSharesAuthorized" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesAuthorized" xlink:to="us-gaap_PreferredStockSharesAuthorized_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xml:lang="en-US">Preferred Stock, Shares Authorized</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xml:lang="en-US">Preferred stock, shares authorized</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PreferredStockSharesIssued" xlink:label="us-gaap_PreferredStockSharesIssued" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesIssued" xlink:to="us-gaap_PreferredStockSharesIssued_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xml:lang="en-US">Preferred Stock, Shares Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xml:lang="en-US">Preferred stock, shares issued</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PreferredStockSharesOutstanding" xlink:label="us-gaap_PreferredStockSharesOutstanding" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesOutstanding" xlink:to="us-gaap_PreferredStockSharesOutstanding_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xml:lang="en-US">Preferred Stock, Shares Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xml:lang="en-US">Preferred stock, shares outstanding</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PreferredStockLiquidationPreferenceValue" xlink:label="us-gaap_PreferredStockLiquidationPreferenceValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockLiquidationPreferenceValue" xlink:to="us-gaap_PreferredStockLiquidationPreferenceValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockLiquidationPreferenceValue_lbl" xml:lang="en-US">Preferred Stock, Liquidation Preference, Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockLiquidationPreferenceValue_lbl" xml:lang="en-US">Preferred stock, liquidation preference, value per share</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockParOrStatedValuePerShare" xlink:to="us-gaap_CommonStockParOrStatedValuePerShare_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xml:lang="en-US">Common Stock, Par or Stated Value Per Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xml:lang="en-US">Common stock, par value (in dollars per share)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="us-gaap_CommonStockSharesAuthorized" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesAuthorized" xlink:to="us-gaap_CommonStockSharesAuthorized_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xml:lang="en-US">Common Stock, Shares Authorized</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xml:lang="en-US">Common stock, shares authorized</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="us-gaap_CommonStockSharesIssued" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesIssued" xlink:to="us-gaap_CommonStockSharesIssued_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xml:lang="en-US">Common Stock, Shares, Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xml:lang="en-US">Common stock, shares issued</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="us-gaap_CommonStockSharesOutstanding" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesOutstanding" xlink:to="us-gaap_CommonStockSharesOutstanding_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xml:lang="en-US">Common Stock, Shares, Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xml:lang="en-US">Common stock, shares outstanding</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="us-gaap_IncomeStatementAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_IncomeStatementAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeStatementAbstract_lbl" xml:lang="en-US">Income Statement [Abstract]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenuesAbstract" xlink:label="us-gaap_RevenuesAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenuesAbstract" xlink:to="us-gaap_RevenuesAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RevenuesAbstract_lbl" xml:lang="en-US">Revenues [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RevenuesAbstract_lbl" xml:lang="en-US">Revenues</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax" xlink:label="us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax" xlink:to="us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_lbl" xml:lang="en-US">Operating Leases, Income Statement, Lease Revenue</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_lbl" xml:lang="en-US">Rental income</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueNotFromContractWithCustomerOther" xlink:label="us-gaap_RevenueNotFromContractWithCustomerOther" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueNotFromContractWithCustomerOther" xlink:to="us-gaap_RevenueNotFromContractWithCustomerOther_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RevenueNotFromContractWithCustomerOther_lbl" xml:lang="en-US">Other Income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RevenueNotFromContractWithCustomerOther_lbl" xml:lang="en-US">Other</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Revenues" xlink:label="us-gaap_Revenues" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Revenues" xlink:to="us-gaap_Revenues_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Revenues_lbl" xml:lang="en-US">Revenues, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_Revenues_lbl" xml:lang="en-US">Total Revenues</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CostsAndExpensesAbstract" xlink:label="us-gaap_CostsAndExpensesAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CostsAndExpensesAbstract" xlink:to="us-gaap_CostsAndExpensesAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CostsAndExpensesAbstract_lbl" xml:lang="en-US">Costs and Expenses [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CostsAndExpensesAbstract_lbl" xml:lang="en-US">Operating Expenses</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RealEstateTaxExpense" xlink:label="us-gaap_RealEstateTaxExpense" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateTaxExpense" xlink:to="us-gaap_RealEstateTaxExpense_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateTaxExpense_lbl" xml:lang="en-US">Real Estate Tax Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_RealEstateTaxExpense_lbl" xml:lang="en-US">Real estate taxes</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseInitialDirectCostExpenseOverTerm" xlink:label="us-gaap_OperatingLeaseInitialDirectCostExpenseOverTerm" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseInitialDirectCostExpenseOverTerm" xlink:to="us-gaap_OperatingLeaseInitialDirectCostExpenseOverTerm_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseInitialDirectCostExpenseOverTerm_lbl" xml:lang="en-US">Operating Lease, Initial Direct Cost Expense, over Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OperatingLeaseInitialDirectCostExpenseOverTerm_lbl" xml:lang="en-US">Property operating expenses</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseExpense" xlink:label="us-gaap_OperatingLeaseExpense" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseExpense" xlink:to="us-gaap_OperatingLeaseExpense_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseExpense_lbl" xml:lang="en-US">Operating Lease, Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OperatingLeaseExpense_lbl" xml:lang="en-US">Land lease expense</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="us-gaap_GeneralAndAdministrativeExpense" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GeneralAndAdministrativeExpense" xlink:to="us-gaap_GeneralAndAdministrativeExpense_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xml:lang="en-US">General and Administrative Expense, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xml:lang="en-US">General and administrative</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DepreciationAndAmortization" xlink:label="us-gaap_DepreciationAndAmortization" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DepreciationAndAmortization" xlink:to="us-gaap_DepreciationAndAmortization_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DepreciationAndAmortization_lbl" xml:lang="en-US">Depreciation, Depletion and Amortization, Nonproduction, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DepreciationAndAmortization_lbl" xml:lang="en-US">Depreciation and amortization</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ImpairmentOfLongLivedAssetsHeldForUse" xlink:label="us-gaap_ImpairmentOfLongLivedAssetsHeldForUse" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ImpairmentOfLongLivedAssetsHeldForUse" xlink:to="us-gaap_ImpairmentOfLongLivedAssetsHeldForUse_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ImpairmentOfLongLivedAssetsHeldForUse_lbl" xml:lang="en-US">Impairment of Long-Lived Assets Held-for-use</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ImpairmentOfLongLivedAssetsHeldForUse_lbl" xml:lang="en-US">Provision for impairment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ImpairmentOfLongLivedAssetsHeldForUse_lbl" xml:lang="en-US">Provision for impairment</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CostsAndExpenses" xlink:label="us-gaap_CostsAndExpenses" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CostsAndExpenses" xlink:to="us-gaap_CostsAndExpenses_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CostsAndExpenses_lbl" xml:lang="en-US">Costs and Expenses, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_CostsAndExpenses_lbl" xml:lang="en-US">Total Operating Expenses</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GainsLossesOnSalesOfAssets" xlink:label="us-gaap_GainsLossesOnSalesOfAssets" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainsLossesOnSalesOfAssets" xlink:to="us-gaap_GainsLossesOnSalesOfAssets_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GainsLossesOnSalesOfAssets_lbl" xml:lang="en-US">Gain (Loss) on Disposition of Assets for Financial Service Operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_GainsLossesOnSalesOfAssets_lbl" xml:lang="en-US">Gain (loss) on sale of assets, net</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GainLossOnInvoluntaryConversionOfAssets" xlink:label="adc_GainLossOnInvoluntaryConversionOfAssets" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GainLossOnInvoluntaryConversionOfAssets" xlink:to="adc_GainLossOnInvoluntaryConversionOfAssets_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GainLossOnInvoluntaryConversionOfAssets_lbl" xml:lang="en-US">The amount of net gain (loss) on involuntary conversion of assets.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GainLossOnInvoluntaryConversionOfAssets_lbl" xml:lang="en-US">Gain (Loss) On Involuntary Conversion Of Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_GainLossOnInvoluntaryConversionOfAssets_lbl" xml:lang="en-US">Gain (loss) on involuntary conversion, net</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="us-gaap_OperatingIncomeLoss" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingIncomeLoss" xlink:to="us-gaap_OperatingIncomeLoss_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xml:lang="en-US">Operating Income (Loss), Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xml:lang="en-US">Income from Operations</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NonoperatingIncomeExpenseAbstract" xlink:label="us-gaap_NonoperatingIncomeExpenseAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NonoperatingIncomeExpenseAbstract" xlink:to="us-gaap_NonoperatingIncomeExpenseAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NonoperatingIncomeExpenseAbstract_lbl" xml:lang="en-US">Nonoperating Income (Expense) [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_NonoperatingIncomeExpenseAbstract_lbl" xml:lang="en-US">Other (Expense) Income</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestExpense" xlink:label="us-gaap_InterestExpense" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpense" xlink:to="us-gaap_InterestExpense_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestExpense_lbl" xml:lang="en-US">Interest Expense, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_InterestExpense_lbl" xml:lang="en-US">Interest expense, net</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="us-gaap_IncomeTaxExpenseBenefit" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="us-gaap_IncomeTaxExpenseBenefit_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xml:lang="en-US">Income Tax Expense (Benefit)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xml:lang="en-US">Income tax (expense) benefit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xml:lang="en-US">Income Tax Expense</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GainLossOnEarlyExtinguishmentOfDebtAndSettlementOfRelatedInterestRateSwaps" xlink:label="adc_GainLossOnEarlyExtinguishmentOfDebtAndSettlementOfRelatedInterestRateSwaps" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GainLossOnEarlyExtinguishmentOfDebtAndSettlementOfRelatedInterestRateSwaps" xlink:to="adc_GainLossOnEarlyExtinguishmentOfDebtAndSettlementOfRelatedInterestRateSwaps_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GainLossOnEarlyExtinguishmentOfDebtAndSettlementOfRelatedInterestRateSwaps_lbl" xml:lang="en-US">The amount of gain (loss) on early extinguishment of debt and settlement of related interest rate swap agreements.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GainLossOnEarlyExtinguishmentOfDebtAndSettlementOfRelatedInterestRateSwaps_lbl" xml:lang="en-US">Gain (Loss) On Early Extinguishment Of Debt And Settlement Of Related Interest Rate Swaps</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_GainLossOnEarlyExtinguishmentOfDebtAndSettlementOfRelatedInterestRateSwaps_lbl" xml:lang="en-US">Amount of gain (loss) on early extinguishment of debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="adc_GainLossOnEarlyExtinguishmentOfDebtAndSettlementOfRelatedInterestRateSwaps_lbl" xml:lang="en-US">Loss on early extinguishment of term loans and settlement of related interest rate swaps</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="us-gaap_OtherNonoperatingIncomeExpense" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherNonoperatingIncomeExpense" xlink:to="us-gaap_OtherNonoperatingIncomeExpense_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_lbl" xml:lang="en-US">Other Nonoperating Income (Expense)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_lbl" xml:lang="en-US">Other (expense) income</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProfitLoss" xlink:label="us-gaap_ProfitLoss" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProfitLoss" xlink:to="us-gaap_ProfitLoss_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProfitLoss_lbl" xml:lang="en-US">Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProfitLoss_lbl" xml:lang="en-US">Net income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_ProfitLoss_lbl" xml:lang="en-US">Net Income</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest" xlink:label="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest" xlink:to="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_lbl" xml:lang="en-US">Net Income (Loss) Attributable to Noncontrolling Interest, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_lbl" xml:lang="en-US">Less net income attributable to non-controlling interest</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="us-gaap_NetIncomeLoss" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLoss" xlink:to="us-gaap_NetIncomeLoss_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetIncomeLoss_lbl" xml:lang="en-US">Net Income (Loss) Attributable to Parent, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetIncomeLoss_lbl" xml:lang="en-US">Net income attributable to Agree Realty Corporation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetIncomeLoss_lbl" xml:lang="en-US">Net income attributable to Agree Realty Corporation</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PreferredStockDividendsIncomeStatementImpact" xlink:label="us-gaap_PreferredStockDividendsIncomeStatementImpact" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockDividendsIncomeStatementImpact" xlink:to="us-gaap_PreferredStockDividendsIncomeStatementImpact_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockDividendsIncomeStatementImpact_lbl" xml:lang="en-US">Preferred Stock Dividends Income Statement Impact</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PreferredStockDividendsIncomeStatementImpact_lbl" xml:lang="en-US">Less: Series A preferred stock dividends</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockDividendsIncomeStatementImpact_lbl" xml:lang="en-US">Less Series A preferred stock dividends</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:to="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_lbl" xml:lang="en-US">Net Income Attributable to Common Stockholders</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_lbl" xml:lang="en-US">Net Income Attributable to Common Stockholders</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="us-gaap_EarningsPerShareAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareAbstract" xlink:to="us-gaap_EarningsPerShareAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerShareAbstract_lbl" xml:lang="en-US">Earnings Per Share [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_EarningsPerShareAbstract_lbl" xml:lang="en-US">Net Income Per Share Attributable to Common Stockholders</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="us-gaap_EarningsPerShareBasic" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareBasic" xlink:to="us-gaap_EarningsPerShareBasic_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xml:lang="en-US">Earnings Per Share, Basic, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xml:lang="en-US">Basic</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="us-gaap_EarningsPerShareDiluted" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareDiluted" xlink:to="us-gaap_EarningsPerShareDiluted_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xml:lang="en-US">Earnings Per Share, Diluted, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xml:lang="en-US">Diluted</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract" xlink:to="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract_lbl" xml:lang="en-US">Other Comprehensive Income (Loss), Net Of Tax, Portion Attributable To Parent [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract_lbl" xml:lang="en-US">Other Comprehensive Income</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OtherComprehensiveIncomeLossCashFlowHedgeGainLossFromSettlement" xlink:label="adc_OtherComprehensiveIncomeLossCashFlowHedgeGainLossFromSettlement" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OtherComprehensiveIncomeLossCashFlowHedgeGainLossFromSettlement" xlink:to="adc_OtherComprehensiveIncomeLossCashFlowHedgeGainLossFromSettlement_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OtherComprehensiveIncomeLossCashFlowHedgeGainLossFromSettlement_lbl" xml:lang="en-US">Other Comprehensive Income (Loss), Cash Flow Hedge Gain (Loss) From Settlement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OtherComprehensiveIncomeLossCashFlowHedgeGainLossFromSettlement_lbl" xml:lang="en-US">Other Comprehensive Income (Loss), Cash Flow Hedge Gain (Loss) From Settlement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_OtherComprehensiveIncomeLossCashFlowHedgeGainLossFromSettlement_lbl" xml:lang="en-US">Amortization of interest rate swaps</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="adc_OtherComprehensiveIncomeLossCashFlowHedgeGainLossFromSettlement_lbl" xml:lang="en-US">Realized gain (loss) on settlement of interest rate swaps</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax" xlink:label="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax" xlink:to="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_lbl" xml:lang="en-US">Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_lbl" xml:lang="en-US">Change in fair value and settlement of interest rate swaps</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest" xlink:label="us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest" xlink:to="us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_lbl" xml:lang="en-US">Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_lbl" xml:lang="en-US">Total comprehensive income (loss)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest" xlink:label="us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest" xlink:to="us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_lbl" xml:lang="en-US">Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_lbl" xml:lang="en-US">Less comprehensive income (loss) attributable to non-controlling interest</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="us-gaap_ComprehensiveIncomeNetOfTax" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ComprehensiveIncomeNetOfTax" xlink:to="us-gaap_ComprehensiveIncomeNetOfTax_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ComprehensiveIncomeNetOfTax_lbl" xml:lang="en-US">Comprehensive Income (Loss), Net of Tax, Attributable to Parent, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_ComprehensiveIncomeNetOfTax_lbl" xml:lang="en-US">Comprehensive Income (Loss) Attributable to Agree Realty Corporation</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:to="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/definitionGuidance" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xml:lang="en-US">Weighted average number of common shares outstanding used in basic earnings per share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xml:lang="en-US">Weighted Average Number of Shares Outstanding, Basic, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xml:lang="en-US">Weighted Average Number of Common Shares Outstanding - Basic</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xml:lang="en-US">Weighted average number of common shares outstanding used in basic earnings per share</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xml:lang="en-US">Weighted Average Number of Shares Outstanding, Diluted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xml:lang="en-US">Weighted Average Number of Common Shares Outstanding - Diluted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xml:lang="en-US">Weighted average number of common shares outstanding used in diluted earnings per share</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementOfStockholdersEquityAbstract" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfStockholdersEquityAbstract" xlink:to="us-gaap_StatementOfStockholdersEquityAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract_lbl" xml:lang="en-US">Statement Of Stockholders' Equity [Abstract]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="us-gaap_StatementEquityComponentsAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementEquityComponentsAxis" xlink:to="us-gaap_StatementEquityComponentsAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xml:lang="en-US">Equity Components [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="us-gaap_EquityComponentDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_EquityComponentDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EquityComponentDomain_lbl" xml:lang="en-US">Equity Component [Domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PreferredStockMember" xlink:label="us-gaap_PreferredStockMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockMember" xlink:to="us-gaap_PreferredStockMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockMember_lbl" xml:lang="en-US">Preferred Stock [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="us-gaap_AdditionalPaidInCapitalMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdditionalPaidInCapitalMember" xlink:to="us-gaap_AdditionalPaidInCapitalMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl" xml:lang="en-US">Additional Paid-in Capital [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember" xlink:label="us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember" xlink:to="us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember_lbl" xml:lang="en-US">Dividends in excess of net income [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl" xml:lang="en-US">Accumulated Other Comprehensive Income (Loss) [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NoncontrollingInterestMember" xlink:label="us-gaap_NoncontrollingInterestMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoncontrollingInterestMember" xlink:to="us-gaap_NoncontrollingInterestMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NoncontrollingInterestMember_lbl" xml:lang="en-US">Noncontrolling Interest [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="us-gaap_PlanNameAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PlanNameAxis" xlink:to="us-gaap_PlanNameAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PlanNameAxis_lbl" xml:lang="en-US">Plan Name [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="us-gaap_PlanNameDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PlanNameDomain" xlink:to="us-gaap_PlanNameDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PlanNameDomain_lbl" xml:lang="en-US">Plan Name [Domain]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OmnibusIncentivePlan2014Member" xlink:label="adc_OmnibusIncentivePlan2014Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OmnibusIncentivePlan2014Member" xlink:to="adc_OmnibusIncentivePlan2014Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OmnibusIncentivePlan2014Member_lbl" xml:lang="en-US">NA</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OmnibusIncentivePlan2014Member_lbl" xml:lang="en-US">2014 Plan</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OmnibusIncentivePlan2020Member" xlink:label="adc_OmnibusIncentivePlan2020Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OmnibusIncentivePlan2020Member" xlink:to="adc_OmnibusIncentivePlan2020Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OmnibusIncentivePlan2020Member_lbl" xml:lang="en-US">Represents information pertaining to Omnibus Incentive Plan 2020 Member.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OmnibusIncentivePlan2020Member_lbl" xml:lang="en-US">2020 Plan</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SharesOutstanding" xlink:label="us-gaap_SharesOutstanding" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharesOutstanding" xlink:to="us-gaap_SharesOutstanding_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharesOutstanding_lbl" xml:lang="en-US">Shares, Outstanding, Beginning Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_SharesOutstanding_lbl" xml:lang="en-US">Balance (in shares)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_SharesOutstanding_lbl" xml:lang="en-US">Balance (in shares)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:to="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl" xml:lang="en-US">Issuance of Series A preferred stock, net of issuance costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl" xml:lang="en-US">Issuance of stock, net of issuance costs</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:to="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xml:lang="en-US">Issuance of Series A preferred stock, net of issuance costs (in shares)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xml:lang="en-US">Shares issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xml:lang="en-US">Issuance of stock, net of issuance costs (in shares)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockRepurchasedDuringPeriodValue" xlink:label="us-gaap_StockRepurchasedDuringPeriodValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockRepurchasedDuringPeriodValue" xlink:to="us-gaap_StockRepurchasedDuringPeriodValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockRepurchasedDuringPeriodValue_lbl" xml:lang="en-US">Stock Repurchased During Period, Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_StockRepurchasedDuringPeriodValue_lbl" xml:lang="en-US">Repurchase of common shares</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockRepurchasedDuringPeriodShares" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockRepurchasedDuringPeriodShares" xlink:to="us-gaap_StockRepurchasedDuringPeriodShares_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares_lbl" xml:lang="en-US">Stock Repurchased During Period, Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares_lbl" xml:lang="en-US">Repurchase of common shares (in shares)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationGross" xlink:label="us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationGross" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationGross" xlink:to="us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationGross_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationGross_lbl" xml:lang="en-US">Shares Issued, Value, Share-based Payment Arrangement, before Forfeiture</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationGross_lbl" xml:lang="en-US">Issuance of stock under the Omnibus Incentive Plan</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross" xlink:label="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross" xlink:to="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross_lbl" xml:lang="en-US">Shares Issued, Shares, Share-based Payment Arrangement, before Forfeiture</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross_lbl" xml:lang="en-US">Issuance of stock under the Omnibus Incentive Plan (in shares)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures" xlink:label="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures" xlink:to="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures_lbl" xml:lang="en-US">Stock Issued During Period, Value, Restricted Stock Award, Forfeitures</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures_lbl" xml:lang="en-US">Forfeiture of restricted stock</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited" xlink:to="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited_lbl" xml:lang="en-US">Stock Issued During Period, Shares, Restricted Stock Award, Forfeited</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited_lbl" xml:lang="en-US">Forfeiture of restricted stock (in shares)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:to="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" xml:lang="en-US">Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" xml:lang="en-US">Stock-based compensation</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Dividends" xlink:label="us-gaap_Dividends" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Dividends" xlink:to="us-gaap_Dividends_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Dividends_lbl" xml:lang="en-US">Dividends</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_Dividends_lbl" xml:lang="en-US">Dividends and distributions declared for the period</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DividendsPreferredStock" xlink:label="us-gaap_DividendsPreferredStock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsPreferredStock" xlink:to="us-gaap_DividendsPreferredStock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendsPreferredStock_lbl" xml:lang="en-US">Series A preferred dividends declared and unpaid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_DividendsPreferredStock_lbl" xml:lang="en-US">Series A preferred dividends declared for the period</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DividendsCommonStock" xlink:label="us-gaap_DividendsCommonStock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsCommonStock" xlink:to="us-gaap_DividendsCommonStock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendsCommonStock_lbl" xml:lang="en-US">Dividends, Common Stock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_DividendsCommonStock_lbl" xml:lang="en-US">Common dividends and distributions declared for the period</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTax" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:to="us-gaap_OtherComprehensiveIncomeLossNetOfTax_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTax_lbl" xml:lang="en-US">Other Comprehensive Income (Loss), Net of Tax, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTax_lbl" xml:lang="en-US">Amortization, changes in fair value and settlement of interest rate swaps</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PreferredStockDividendsPerShareDeclared" xlink:label="us-gaap_PreferredStockDividendsPerShareDeclared" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockDividendsPerShareDeclared" xlink:to="us-gaap_PreferredStockDividendsPerShareDeclared_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockDividendsPerShareDeclared_lbl" xml:lang="en-US">Cash dividends declared per depositary share of Series A preferred stock</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DividendsPayableAmountPerShare" xlink:label="us-gaap_DividendsPayableAmountPerShare" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsPayableAmountPerShare" xlink:to="us-gaap_DividendsPayableAmountPerShare_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendsPayableAmountPerShare_lbl" xml:lang="en-US">Dividends Payable, Amount Per Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DividendsPayableAmountPerShare_lbl" xml:lang="en-US">Cash dividends declared per common share (in dollars per share)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="us-gaap_StatementOfCashFlowsAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfCashFlowsAbstract" xlink:to="us-gaap_StatementOfCashFlowsAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementOfCashFlowsAbstract_lbl" xml:lang="en-US">Statement Of Cash Flows [Abstract]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US">Net Cash Provided by (Used in) Operating Activities [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US">Cash Flows from Operating Activities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US">Adjustments To Reconcile Net Income (Loss) To Cash Provided By (Used In) Operating Activities [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US">Adjustments to reconcile net income to net cash provided by operating activities:</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AmortizationOfAboveAndBelowMarketLeases" xlink:label="us-gaap_AmortizationOfAboveAndBelowMarketLeases" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AmortizationOfAboveAndBelowMarketLeases" xlink:to="us-gaap_AmortizationOfAboveAndBelowMarketLeases_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AmortizationOfAboveAndBelowMarketLeases_lbl" xml:lang="en-US">Amortization of above and below Market Leases</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AmortizationOfAboveAndBelowMarketLeases_lbl" xml:lang="en-US">Amortization from above (below) market lease intangibles, net</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AmortizationOfFinancingCostsAndDiscounts" xlink:label="us-gaap_AmortizationOfFinancingCostsAndDiscounts" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AmortizationOfFinancingCostsAndDiscounts" xlink:to="us-gaap_AmortizationOfFinancingCostsAndDiscounts_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AmortizationOfFinancingCostsAndDiscounts_lbl" xml:lang="en-US">Amortization of Financing Costs and Discounts, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AmortizationOfFinancingCostsAndDiscounts_lbl" xml:lang="en-US">Amortization from financing and credit facility costs</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="us-gaap_ShareBasedCompensation" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensation" xlink:to="us-gaap_ShareBasedCompensation_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensation_lbl" xml:lang="en-US">Share-based Compensation, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ShareBasedCompensation_lbl" xml:lang="en-US">Stock-based compensation</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SettlementOfInterestRateSwap" xlink:label="adc_SettlementOfInterestRateSwap" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SettlementOfInterestRateSwap" xlink:to="adc_SettlementOfInterestRateSwap_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SettlementOfInterestRateSwap_lbl" xml:lang="en-US">Amount of expense (income) related to the settlement of interest rate swap</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SettlementOfInterestRateSwap_lbl" xml:lang="en-US">Settlement Of Interest Rate Swap</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_SettlementOfInterestRateSwap_lbl" xml:lang="en-US">Gain (loss) on settlement of interest rate swaps</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GainLossOnDispositionOfAssets1" xlink:label="us-gaap_GainLossOnDispositionOfAssets1" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainLossOnDispositionOfAssets1" xlink:to="us-gaap_GainLossOnDispositionOfAssets1_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GainLossOnDispositionOfAssets1_lbl" xml:lang="en-US">Gain (Loss) on Disposition of Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:label="us-gaap_GainLossOnDispositionOfAssets1_lbl" xml:lang="en-US">(Gain) loss on sale of assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_WriteOffOfDeferredDebtIssuanceCost" xlink:label="us-gaap_WriteOffOfDeferredDebtIssuanceCost" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WriteOffOfDeferredDebtIssuanceCost" xlink:to="us-gaap_WriteOffOfDeferredDebtIssuanceCost_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WriteOffOfDeferredDebtIssuanceCost_lbl" xml:lang="en-US">Write off of Deferred Debt Issuance Cost</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_WriteOffOfDeferredDebtIssuanceCost_lbl" xml:lang="en-US">Write-off of unamortized finance costs upon debt extinguishment</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:to="us-gaap_IncreaseDecreaseInAccountsReceivable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable_lbl" xml:lang="en-US">Increase (Decrease) In Accounts Receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable_lbl" xml:lang="en-US">(Increase) decrease in accounts receivable</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:to="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl" xml:lang="en-US">Increase (Decrease) in Other Operating Assets, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl" xml:lang="en-US">(Increase) decrease in other assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccountsPayable" xlink:to="us-gaap_IncreaseDecreaseInAccountsPayable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable_lbl" xml:lang="en-US">Increase (Decrease) in Accounts Payable, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable_lbl" xml:lang="en-US">Increase (decrease) in accounts payable, accrued expenses, and other liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xml:lang="en-US">Net Cash Provided by (Used in) Operating Activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xml:lang="en-US">Net Cash Provided by Operating Activities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xml:lang="en-US">Net Cash Provided by (Used in) Investing Activities [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xml:lang="en-US">Cash Flows from Investing Activities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsToAcquireRealEstate" xlink:label="us-gaap_PaymentsToAcquireRealEstate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquireRealEstate" xlink:to="us-gaap_PaymentsToAcquireRealEstate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsToAcquireRealEstate_lbl" xml:lang="en-US">Payments to Acquire Real Estate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsToAcquireRealEstate_lbl" xml:lang="en-US">Acquisition of real estate investments and other assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsToDevelopRealEstateAssets" xlink:label="us-gaap_PaymentsToDevelopRealEstateAssets" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToDevelopRealEstateAssets" xlink:to="us-gaap_PaymentsToDevelopRealEstateAssets_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsToDevelopRealEstateAssets_lbl" xml:lang="en-US">Payments to Develop Real Estate Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsToDevelopRealEstateAssets_lbl" xml:lang="en-US">Development of real estate investments and other assets, net of reimbursements (including capitalized interest of $249 in 2021, $109 in 2020, and $410 in 2019)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsForLeasingCosts" xlink:label="us-gaap_PaymentsForLeasingCosts" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsForLeasingCosts" xlink:to="us-gaap_PaymentsForLeasingCosts_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsForLeasingCosts_lbl" xml:lang="en-US">Payments for Leasing Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsForLeasingCosts_lbl" xml:lang="en-US">Payment of leasing costs</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromSaleOfProductiveAssets" xlink:label="us-gaap_ProceedsFromSaleOfProductiveAssets" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromSaleOfProductiveAssets" xlink:to="us-gaap_ProceedsFromSaleOfProductiveAssets_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromSaleOfProductiveAssets_lbl" xml:lang="en-US">Proceeds from Sale of Productive Assets, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ProceedsFromSaleOfProductiveAssets_lbl" xml:lang="en-US">Net proceeds from sale of assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xml:lang="en-US">Net Cash Provided by (Used in) Investing Activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xml:lang="en-US">Net Cash Used in Investing Activities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xml:lang="en-US">Net Cash Provided by (Used in) Financing Activities [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xml:lang="en-US">Cash Flows from Financing Activities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock" xlink:label="us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock" xlink:to="us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_lbl" xml:lang="en-US">Proceeds from Issuance of Preferred Stock and Preference Stock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_lbl" xml:lang="en-US">Proceeds from Series A preferred stock offering, net</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:to="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xml:lang="en-US">Proceeds From Issuance Of Common Stock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xml:lang="en-US">Net proceeds received</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xml:lang="en-US">Proceeds from common stock offerings, net</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:to="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl" xml:lang="en-US">Payments for Repurchase of Common Stock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl" xml:lang="en-US">Repurchase of common shares</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromRepaymentsOfLinesOfCredit" xlink:label="us-gaap_ProceedsFromRepaymentsOfLinesOfCredit" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromRepaymentsOfLinesOfCredit" xlink:to="us-gaap_ProceedsFromRepaymentsOfLinesOfCredit_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromRepaymentsOfLinesOfCredit_lbl" xml:lang="en-US">Proceeds from Lines of Credit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ProceedsFromRepaymentsOfLinesOfCredit_lbl" xml:lang="en-US">Unsecured revolving credit facility borrowings (repayments), net</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RepaymentsOfSecuredDebt" xlink:label="us-gaap_RepaymentsOfSecuredDebt" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RepaymentsOfSecuredDebt" xlink:to="us-gaap_RepaymentsOfSecuredDebt_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RepaymentsOfSecuredDebt_lbl" xml:lang="en-US">Repayments Of Secured Debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_RepaymentsOfSecuredDebt_lbl" xml:lang="en-US">Payments of mortgage notes payable</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RepaymentsOfUnsecuredDebt" xlink:label="us-gaap_RepaymentsOfUnsecuredDebt" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RepaymentsOfUnsecuredDebt" xlink:to="us-gaap_RepaymentsOfUnsecuredDebt_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RepaymentsOfUnsecuredDebt_lbl" xml:lang="en-US">Repayments of Unsecured Debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_RepaymentsOfUnsecuredDebt_lbl" xml:lang="en-US">Payments of unsecured term loans</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromUnsecuredNotesPayable" xlink:label="us-gaap_ProceedsFromUnsecuredNotesPayable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromUnsecuredNotesPayable" xlink:to="us-gaap_ProceedsFromUnsecuredNotesPayable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromUnsecuredNotesPayable_lbl" xml:lang="en-US">Proceeds from Unsecured Notes Payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ProceedsFromUnsecuredNotesPayable_lbl" xml:lang="en-US">Proceeds from senior unsecured notes</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock" xlink:label="us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock" xlink:to="us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock_lbl" xml:lang="en-US">Payments of Ordinary Dividends, Preferred Stock and Preference Stock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock_lbl" xml:lang="en-US">Payment of Series A preferred dividends</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsOfDividendsCommonStock" xlink:label="us-gaap_PaymentsOfDividendsCommonStock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsOfDividendsCommonStock" xlink:to="us-gaap_PaymentsOfDividendsCommonStock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsOfDividendsCommonStock_lbl" xml:lang="en-US">Payments of Ordinary Dividends, Common Stock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsOfDividendsCommonStock_lbl" xml:lang="en-US">Payment of common stock dividends</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsToMinorityShareholders" xlink:label="us-gaap_PaymentsToMinorityShareholders" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToMinorityShareholders" xlink:to="us-gaap_PaymentsToMinorityShareholders_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsToMinorityShareholders_lbl" xml:lang="en-US">Payments to Noncontrolling Interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsToMinorityShareholders_lbl" xml:lang="en-US">Distributions to non-controlling interest</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsOfFinancingCosts" xlink:label="us-gaap_PaymentsOfFinancingCosts" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsOfFinancingCosts" xlink:to="us-gaap_PaymentsOfFinancingCosts_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsOfFinancingCosts_lbl" xml:lang="en-US">Payments of Financing Costs, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsOfFinancingCosts_lbl" xml:lang="en-US">Payments for financing costs</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xml:lang="en-US">Net Cash Provided by (Used in) Financing Activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xml:lang="en-US">Net Cash Provided by Financing Activities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:to="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_lbl" xml:lang="en-US">Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_lbl" xml:lang="en-US">Net Increase (Decrease) in Cash and Cash Equivalents and Cash Held in Escrow</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:to="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xml:lang="en-US">Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xml:lang="en-US">Cash and cash equivalents and cash held in escrow, end of period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xml:lang="en-US">Cash and cash equivalents and cash held in escrow, beginning of period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xml:lang="en-US">Total of cash and cash equivalents and cash held in escrow</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SupplementalCashFlowInformationAbstract" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SupplementalCashFlowInformationAbstract" xlink:to="us-gaap_SupplementalCashFlowInformationAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xml:lang="en-US">Supplemental Cash Flow Information [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xml:lang="en-US">Supplemental Disclosure of Cash Flow Information</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestPaidNet" xlink:label="us-gaap_InterestPaidNet" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestPaidNet" xlink:to="us-gaap_InterestPaidNet_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestPaidNet_lbl" xml:lang="en-US">Interest Paid, Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_InterestPaidNet_lbl" xml:lang="en-US">Cash paid for interest (net of amounts capitalized)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxesPaidNet" xlink:label="us-gaap_IncomeTaxesPaidNet" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxesPaidNet" xlink:to="us-gaap_IncomeTaxesPaidNet_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxesPaidNet_lbl" xml:lang="en-US">Income Taxes Paid, Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_IncomeTaxesPaidNet_lbl" xml:lang="en-US">Cash paid for income tax</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract" xlink:label="us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract" xlink:to="us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_lbl" xml:lang="en-US">Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_lbl" xml:lang="en-US">Supplemental Disclosure of Non-Cash Investing and Financing Activities</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RightOfUseAssetsAddedUponImplementationOfLease" xlink:label="adc_RightOfUseAssetsAddedUponImplementationOfLease" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RightOfUseAssetsAddedUponImplementationOfLease" xlink:to="adc_RightOfUseAssetsAddedUponImplementationOfLease_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RightOfUseAssetsAddedUponImplementationOfLease_lbl" xml:lang="en-US">Represents the amount of right of use assets added upon implementation of leases standard on January 1, 2019.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RightOfUseAssetsAddedUponImplementationOfLease_lbl" xml:lang="en-US">Right of Use Assets Added Upon Implementation Of Lease</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_RightOfUseAssetsAddedUponImplementationOfLease_lbl" xml:lang="en-US">Operating lease right of use assets added upon implementation of leases standard on January 1, 2019</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AdditionalRightOfUseAssetsAddedUnderNewGroundLeases" xlink:label="adc_AdditionalRightOfUseAssetsAddedUnderNewGroundLeases" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AdditionalRightOfUseAssetsAddedUnderNewGroundLeases" xlink:to="adc_AdditionalRightOfUseAssetsAddedUnderNewGroundLeases_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AdditionalRightOfUseAssetsAddedUnderNewGroundLeases_lbl" xml:lang="en-US">Represents the amount of additional right of use assets added under new ground leases after January 1, 2019.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AdditionalRightOfUseAssetsAddedUnderNewGroundLeases_lbl" xml:lang="en-US">Additional Right of Use Assets Added Under New Ground Leases</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_AdditionalRightOfUseAssetsAddedUnderNewGroundLeases_lbl" xml:lang="en-US">Additional lease right of use assets added under new ground leases after January 1, 2019</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OperatingLeaseRightOfUseAssetsDisposedOfUnderGroundLeases" xlink:label="adc_OperatingLeaseRightOfUseAssetsDisposedOfUnderGroundLeases" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OperatingLeaseRightOfUseAssetsDisposedOfUnderGroundLeases" xlink:to="adc_OperatingLeaseRightOfUseAssetsDisposedOfUnderGroundLeases_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OperatingLeaseRightOfUseAssetsDisposedOfUnderGroundLeases_lbl" xml:lang="en-US">Represents the amount of operating lease right of use assets disposed of upon acquisition of underlying ground leased land.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OperatingLeaseRightOfUseAssetsDisposedOfUnderGroundLeases_lbl" xml:lang="en-US">Operating Lease Right Of Use Assets Disposed Of Under Ground Leases</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_OperatingLeaseRightOfUseAssetsDisposedOfUnderGroundLeases_lbl" xml:lang="en-US">Operating lease right of use assets disposed of upon acquisition of underlying ground leased land</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AccrualOfDevelopmentConstructionAndOtherRealEstateInvestmentCosts" xlink:label="adc_AccrualOfDevelopmentConstructionAndOtherRealEstateInvestmentCosts" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AccrualOfDevelopmentConstructionAndOtherRealEstateInvestmentCosts" xlink:to="adc_AccrualOfDevelopmentConstructionAndOtherRealEstateInvestmentCosts_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AccrualOfDevelopmentConstructionAndOtherRealEstateInvestmentCosts_lbl" xml:lang="en-US">Amount of accrual cost for development, construction and other cost for real estate investment.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AccrualOfDevelopmentConstructionAndOtherRealEstateInvestmentCosts_lbl" xml:lang="en-US">Accrual of Development, Construction And Other Real Estate Investment Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_AccrualOfDevelopmentConstructionAndOtherRealEstateInvestmentCosts_lbl" xml:lang="en-US">Change in accrual of development, construction and other real estate investment costs</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RealEstateInventoryCapitalizedInterestCosts" xlink:label="us-gaap_RealEstateInventoryCapitalizedInterestCosts" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateInventoryCapitalizedInterestCosts" xlink:to="us-gaap_RealEstateInventoryCapitalizedInterestCosts_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateInventoryCapitalizedInterestCosts_lbl" xml:lang="en-US">Real Estate Inventory, Capitalized Interest Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RealEstateInventoryCapitalizedInterestCosts_lbl" xml:lang="en-US">Real estate inventory, capitalized interest costs</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_lbl" xml:lang="en-US">Organization</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock" xlink:to="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_lbl" xml:lang="en-US">Organization, Consolidation and Presentation Of Financial Statements Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_lbl" xml:lang="en-US">Organization</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:label="us-gaap_AccountingPoliciesAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_AccountingPoliciesAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountingPoliciesAbstract_lbl" xml:lang="en-US">Summary of Significant Accounting Policies</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SignificantAccountingPoliciesTextBlock" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SignificantAccountingPoliciesTextBlock" xlink:to="us-gaap_SignificantAccountingPoliciesTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock_lbl" xml:lang="en-US">Summary of Significant Accounting Policies.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock_lbl" xml:lang="en-US">Summary of Significant Accounting Policies</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LeasesAbstract" xlink:label="us-gaap_LeasesAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeasesAbstract" xlink:to="us-gaap_LeasesAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LeasesAbstract_lbl" xml:lang="en-US">Leases</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LeaseDisclosureTextBlock" xlink:label="adc_LeaseDisclosureTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LeaseDisclosureTextBlock" xlink:to="adc_LeaseDisclosureTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LeaseDisclosureTextBlock_lbl" xml:lang="en-US">The entire disclosure of information about leases.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LeaseDisclosureTextBlock_lbl" xml:lang="en-US">Lease Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_LeaseDisclosureTextBlock_lbl" xml:lang="en-US">Leases</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RealEstateAbstract" xlink:label="us-gaap_RealEstateAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateAbstract" xlink:to="us-gaap_RealEstateAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateAbstract_lbl" xml:lang="en-US">Real Estate Investments</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RealEstateDisclosureTextBlock" xlink:label="us-gaap_RealEstateDisclosureTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateDisclosureTextBlock" xlink:to="us-gaap_RealEstateDisclosureTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateDisclosureTextBlock_lbl" xml:lang="en-US">Real Estate Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RealEstateDisclosureTextBlock_lbl" xml:lang="en-US">Real Estate Investments</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtDisclosureAbstract" xlink:label="us-gaap_DebtDisclosureAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtDisclosureAbstract" xlink:to="us-gaap_DebtDisclosureAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtDisclosureAbstract_lbl" xml:lang="en-US">Debt</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtDisclosureTextBlock" xlink:label="us-gaap_DebtDisclosureTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtDisclosureTextBlock" xlink:to="us-gaap_DebtDisclosureTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtDisclosureTextBlock_lbl" xml:lang="en-US">Debt Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtDisclosureTextBlock_lbl" xml:lang="en-US">Debt</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquityNoteAbstract" xlink:label="us-gaap_StockholdersEquityNoteAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityNoteAbstract" xlink:to="us-gaap_StockholdersEquityNoteAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquityNoteAbstract_lbl" xml:lang="en-US">Common and Preferred Stock</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:to="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl" xml:lang="en-US">Stockholders' Equity Note Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl" xml:lang="en-US">Common and Preferred Stock</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DividendsAndDistributionsPayableAbstract" xlink:label="adc_DividendsAndDistributionsPayableAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DividendsAndDistributionsPayableAbstract" xlink:to="adc_DividendsAndDistributionsPayableAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DividendsAndDistributionsPayableAbstract_lbl" xml:lang="en-US">Dividends and Distributions Payable</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DividendsAndDistributionsPayableTextBlock" xlink:label="adc_DividendsAndDistributionsPayableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DividendsAndDistributionsPayableTextBlock" xlink:to="adc_DividendsAndDistributionsPayableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DividendsAndDistributionsPayableTextBlock_lbl" xml:lang="en-US">The entire disclosure of dividends and distributions payable.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DividendsAndDistributionsPayableTextBlock_lbl" xml:lang="en-US">Dividends And Distributions Payable [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="adc_DividendsAndDistributionsPayableTextBlock_lbl" xml:lang="en-US">Dividends and Distributions Payable</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:label="us-gaap_IncomeTaxDisclosureAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_IncomeTaxDisclosureAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxDisclosureAbstract_lbl" xml:lang="en-US">Income Taxes</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxDisclosureTextBlock" xlink:label="us-gaap_IncomeTaxDisclosureTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxDisclosureTextBlock" xlink:to="us-gaap_IncomeTaxDisclosureTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxDisclosureTextBlock_lbl" xml:lang="en-US">Income Tax Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_IncomeTaxDisclosureTextBlock_lbl" xml:lang="en-US">Income Taxes</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract" xlink:to="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract_lbl" xml:lang="en-US">Derivative Instruments and Hedging Activity</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock" xlink:to="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_lbl" xml:lang="en-US">Derivative Instruments and Hedging Activities Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_lbl" xml:lang="en-US">Derivative Instruments and Hedging Activity</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueDisclosuresAbstract" xlink:label="us-gaap_FairValueDisclosuresAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueDisclosuresAbstract" xlink:to="us-gaap_FairValueDisclosuresAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueDisclosuresAbstract_lbl" xml:lang="en-US">Fair Value Measurements</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueDisclosuresTextBlock" xlink:label="us-gaap_FairValueDisclosuresTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueDisclosuresTextBlock" xlink:to="us-gaap_FairValueDisclosuresTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueDisclosuresTextBlock_lbl" xml:lang="en-US">Fair Value Disclosures [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueDisclosuresTextBlock_lbl" xml:lang="en-US">Fair Value Measurements</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:to="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_lbl" xml:lang="en-US">Equity Incentive Plan</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" xlink:to="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_lbl" xml:lang="en-US">Disclosure of Compensation Related Costs, Share-based Payments [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_lbl" xml:lang="en-US">Equity Incentive Plan</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl" xml:lang="en-US">Commitments and Contingencies</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:to="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl" xml:lang="en-US">Commitments and Contingencies Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl" xml:lang="en-US">Commitments and Contingencies</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventsAbstract" xlink:label="us-gaap_SubsequentEventsAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventsAbstract" xlink:to="us-gaap_SubsequentEventsAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventsAbstract_lbl" xml:lang="en-US">Subsequent Events</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventsTextBlock" xlink:label="us-gaap_SubsequentEventsTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventsTextBlock" xlink:to="us-gaap_SubsequentEventsTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xml:lang="en-US">Subsequent Events [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xml:lang="en-US">Subsequent Events</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationDisclosureAbstract" xlink:label="srt_RealEstateAndAccumulatedDepreciationDisclosureAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RealEstateAndAccumulatedDepreciationDisclosureAbstract" xlink:to="srt_RealEstateAndAccumulatedDepreciationDisclosureAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_RealEstateAndAccumulatedDepreciationDisclosureAbstract_lbl" xml:lang="en-US">SEC Schedule III, Real Estate and Accumulated Depreciation Disclosure [Abstract]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationDisclosureTextBlock" xlink:label="srt_RealEstateAndAccumulatedDepreciationDisclosureTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RealEstateAndAccumulatedDepreciationDisclosureTextBlock" xlink:to="srt_RealEstateAndAccumulatedDepreciationDisclosureTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_RealEstateAndAccumulatedDepreciationDisclosureTextBlock_lbl" xml:lang="en-US">SEC Schedule III, Real Estate and Accumulated Depreciation Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="srt_RealEstateAndAccumulatedDepreciationDisclosureTextBlock_lbl" xml:lang="en-US">Schedule III - Real Estate And Accumulated Depreciation</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConsolidationPolicyTextBlock" xlink:label="us-gaap_ConsolidationPolicyTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConsolidationPolicyTextBlock" xlink:to="us-gaap_ConsolidationPolicyTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ConsolidationPolicyTextBlock_lbl" xml:lang="en-US">Consolidation, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ConsolidationPolicyTextBlock_lbl" xml:lang="en-US">Principles of Consolidation</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NoncontrollingInterestPolicyPolicyTextBlock" xlink:label="adc_NoncontrollingInterestPolicyPolicyTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NoncontrollingInterestPolicyPolicyTextBlock" xlink:to="adc_NoncontrollingInterestPolicyPolicyTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NoncontrollingInterestPolicyPolicyTextBlock_lbl" xml:lang="en-US">Disclosure of accounting policy for noncontrolling interest.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NoncontrollingInterestPolicyPolicyTextBlock_lbl" xml:lang="en-US">Noncontrolling Interest Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_NoncontrollingInterestPolicyPolicyTextBlock_lbl" xml:lang="en-US">Non-controlling Interest</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SignificantRisksAndUncertaintiesPolicyPolicyTextBlock" xlink:label="adc_SignificantRisksAndUncertaintiesPolicyPolicyTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SignificantRisksAndUncertaintiesPolicyPolicyTextBlock" xlink:to="adc_SignificantRisksAndUncertaintiesPolicyPolicyTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SignificantRisksAndUncertaintiesPolicyPolicyTextBlock_lbl" xml:lang="en-US">Significant Risks and Uncertainties Policy, [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SignificantRisksAndUncertaintiesPolicyPolicyTextBlock_lbl" xml:lang="en-US">Significant Risks and Uncertainties Policy, [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="adc_SignificantRisksAndUncertaintiesPolicyPolicyTextBlock_lbl" xml:lang="en-US">Significant Risks and Uncertainties</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RealEstatePolicyTextBlock" xlink:label="us-gaap_RealEstatePolicyTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstatePolicyTextBlock" xlink:to="us-gaap_RealEstatePolicyTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstatePolicyTextBlock_lbl" xml:lang="en-US">Real Estate, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_RealEstatePolicyTextBlock_lbl" xml:lang="en-US">Real Estate Investments</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PurchaseAccountingForAcquisitionsOfRealEstatePolicyTextBlock" xlink:label="adc_PurchaseAccountingForAcquisitionsOfRealEstatePolicyTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PurchaseAccountingForAcquisitionsOfRealEstatePolicyTextBlock" xlink:to="adc_PurchaseAccountingForAcquisitionsOfRealEstatePolicyTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PurchaseAccountingForAcquisitionsOfRealEstatePolicyTextBlock_lbl" xml:lang="en-US">Disclosure of accounting policy for acquisitions of real estate accounted under purchase accounting method.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PurchaseAccountingForAcquisitionsOfRealEstatePolicyTextBlock_lbl" xml:lang="en-US">Purchase Accounting For Acquisitions Of Real Estate [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="adc_PurchaseAccountingForAcquisitionsOfRealEstatePolicyTextBlock_lbl" xml:lang="en-US">Acquisitions of Real Estate</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DepreciationDepletionAndAmortizationPolicyTextBlock" xlink:label="us-gaap_DepreciationDepletionAndAmortizationPolicyTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DepreciationDepletionAndAmortizationPolicyTextBlock" xlink:to="us-gaap_DepreciationDepletionAndAmortizationPolicyTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DepreciationDepletionAndAmortizationPolicyTextBlock_lbl" xml:lang="en-US">Depreciation, Depletion, and Amortization [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DepreciationDepletionAndAmortizationPolicyTextBlock_lbl" xml:lang="en-US">Depreciation and Amortization</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock" xlink:label="us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock" xlink:to="us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_lbl" xml:lang="en-US">Impairment of Real Estate Investments, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_lbl" xml:lang="en-US">Impairments</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashAndCashEquivalentsPolicyTextBlock" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsPolicyTextBlock" xlink:to="us-gaap_CashAndCashEquivalentsPolicyTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock_lbl" xml:lang="en-US">Cash and Cash Equivalents, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock_lbl" xml:lang="en-US">Cash and Cash Equivalents and Cash Held in Escrow</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueFromContractWithCustomerPolicyTextBlock" xlink:label="us-gaap_RevenueFromContractWithCustomerPolicyTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueFromContractWithCustomerPolicyTextBlock" xlink:to="us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_lbl" xml:lang="en-US">Revenue from Contract with Customer [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_lbl" xml:lang="en-US">Revenue Recognition and Accounts Receivable</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LessorOperatingLeaseLeaseConcessionsPolicyPolicyTextBlock" xlink:label="adc_LessorOperatingLeaseLeaseConcessionsPolicyPolicyTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LessorOperatingLeaseLeaseConcessionsPolicyPolicyTextBlock" xlink:to="adc_LessorOperatingLeaseLeaseConcessionsPolicyPolicyTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LessorOperatingLeaseLeaseConcessionsPolicyPolicyTextBlock_lbl" xml:lang="en-US">Lessor, Operating Lease, Lease Concessions Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LessorOperatingLeaseLeaseConcessionsPolicyPolicyTextBlock_lbl" xml:lang="en-US">Lessor, Operating Lease, Lease Concessions Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_LessorOperatingLeaseLeaseConcessionsPolicyPolicyTextBlock_lbl" xml:lang="en-US">Rent Concessions - COVID-19</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SalesTaxPolicyTextBlock" xlink:label="adc_SalesTaxPolicyTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SalesTaxPolicyTextBlock" xlink:to="adc_SalesTaxPolicyTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SalesTaxPolicyTextBlock_lbl" xml:lang="en-US">The entire disclosure of sales tax policy.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SalesTaxPolicyTextBlock_lbl" xml:lang="en-US">Sales Tax [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="adc_SalesTaxPolicyTextBlock_lbl" xml:lang="en-US">Sales Tax</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EarningsPerSharePolicyTextBlock" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerSharePolicyTextBlock" xlink:to="us-gaap_EarningsPerSharePolicyTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock_lbl" xml:lang="en-US">Earnings Per Share, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock_lbl" xml:lang="en-US">Earnings per Share</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ForwardEquitySalesPolicyPolicyTextBlock" xlink:label="adc_ForwardEquitySalesPolicyPolicyTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ForwardEquitySalesPolicyPolicyTextBlock" xlink:to="adc_ForwardEquitySalesPolicyPolicyTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ForwardEquitySalesPolicyPolicyTextBlock_lbl" xml:lang="en-US">Forward Equity Sales, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ForwardEquitySalesPolicyPolicyTextBlock_lbl" xml:lang="en-US">Forward Equity Sales, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_ForwardEquitySalesPolicyPolicyTextBlock_lbl" xml:lang="en-US">Forward Equity Sales</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EquityOfferingCostPolicyPolicyTextBlock" xlink:label="adc_EquityOfferingCostPolicyPolicyTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EquityOfferingCostPolicyPolicyTextBlock" xlink:to="adc_EquityOfferingCostPolicyPolicyTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_EquityOfferingCostPolicyPolicyTextBlock_lbl" xml:lang="en-US">Disclosure of accounting policy for equity offering cost.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EquityOfferingCostPolicyPolicyTextBlock_lbl" xml:lang="en-US">Equity Offering Cost Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="adc_EquityOfferingCostPolicyPolicyTextBlock_lbl" xml:lang="en-US">Equity Offering Costs</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxPolicyTextBlock" xlink:label="us-gaap_IncomeTaxPolicyTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxPolicyTextBlock" xlink:to="us-gaap_IncomeTaxPolicyTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxPolicyTextBlock_lbl" xml:lang="en-US">Income Tax, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_IncomeTaxPolicyTextBlock_lbl" xml:lang="en-US">Income Taxes</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GoingConcernPolicyPolicyTextBlock" xlink:label="adc_GoingConcernPolicyPolicyTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GoingConcernPolicyPolicyTextBlock" xlink:to="adc_GoingConcernPolicyPolicyTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GoingConcernPolicyPolicyTextBlock_lbl" xml:lang="en-US">Going Concern, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GoingConcernPolicyPolicyTextBlock_lbl" xml:lang="en-US">Going Concern, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="adc_GoingConcernPolicyPolicyTextBlock_lbl" xml:lang="en-US">Management's Responsibility to Evaluate Our Ability to Continue as a Going Concern</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PriorPeriodReclassificationAdjustmentDescription" xlink:label="us-gaap_PriorPeriodReclassificationAdjustmentDescription" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PriorPeriodReclassificationAdjustmentDescription" xlink:to="us-gaap_PriorPeriodReclassificationAdjustmentDescription_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PriorPeriodReclassificationAdjustmentDescription_lbl" xml:lang="en-US">Reclassification, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_PriorPeriodReclassificationAdjustmentDescription_lbl" xml:lang="en-US">Reclassifications</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentReportingPolicyPolicyTextBlock" xlink:label="us-gaap_SegmentReportingPolicyPolicyTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SegmentReportingPolicyPolicyTextBlock" xlink:to="us-gaap_SegmentReportingPolicyPolicyTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SegmentReportingPolicyPolicyTextBlock_lbl" xml:lang="en-US">Segment Reporting, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_SegmentReportingPolicyPolicyTextBlock_lbl" xml:lang="en-US">Segment Reporting</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EmploymentAgreementPolicyPolicyTextBlock" xlink:label="adc_EmploymentAgreementPolicyPolicyTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EmploymentAgreementPolicyPolicyTextBlock" xlink:to="adc_EmploymentAgreementPolicyPolicyTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_EmploymentAgreementPolicyPolicyTextBlock_lbl" xml:lang="en-US">Employment Agreement Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EmploymentAgreementPolicyPolicyTextBlock_lbl" xml:lang="en-US">Employment Agreement Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="adc_EmploymentAgreementPolicyPolicyTextBlock_lbl" xml:lang="en-US">Employment Agreement</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UseOfEstimates" xlink:label="us-gaap_UseOfEstimates" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UseOfEstimates" xlink:to="us-gaap_UseOfEstimates_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UseOfEstimates_lbl" xml:lang="en-US">Use of Estimates, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_UseOfEstimates_lbl" xml:lang="en-US">Use of Estimates</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueOfFinancialInstrumentsPolicy" xlink:label="us-gaap_FairValueOfFinancialInstrumentsPolicy" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueOfFinancialInstrumentsPolicy" xlink:to="us-gaap_FairValueOfFinancialInstrumentsPolicy_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueOfFinancialInstrumentsPolicy_lbl" xml:lang="en-US">Fair Value of Financial Instruments, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_FairValueOfFinancialInstrumentsPolicy_lbl" xml:lang="en-US">Fair Values of Financial Instruments</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:to="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xml:lang="en-US">New Accounting Pronouncements, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xml:lang="en-US">Recent Accounting Pronouncements</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ScheduleOfRealEstatePropertiesHeldForSaleTableTextBlock" xlink:label="adc_ScheduleOfRealEstatePropertiesHeldForSaleTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ScheduleOfRealEstatePropertiesHeldForSaleTableTextBlock" xlink:to="adc_ScheduleOfRealEstatePropertiesHeldForSaleTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ScheduleOfRealEstatePropertiesHeldForSaleTableTextBlock_lbl" xml:lang="en-US">Schedule of Real Estate Properties Held-For-Sale [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ScheduleOfRealEstatePropertiesHeldForSaleTableTextBlock_lbl" xml:lang="en-US">Schedule of Real Estate Properties Held-For-Sale [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_ScheduleOfRealEstatePropertiesHeldForSaleTableTextBlock_lbl" xml:lang="en-US">Schedule of real estate properties held-for-sale</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ScheduleOfAmortizationOfDeferredExpensesTableTextBlock" xlink:label="adc_ScheduleOfAmortizationOfDeferredExpensesTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ScheduleOfAmortizationOfDeferredExpensesTableTextBlock" xlink:to="adc_ScheduleOfAmortizationOfDeferredExpensesTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ScheduleOfAmortizationOfDeferredExpensesTableTextBlock_lbl" xml:lang="en-US">Tabular disclosure of the amount of amortization of deferred expense.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ScheduleOfAmortizationOfDeferredExpensesTableTextBlock_lbl" xml:lang="en-US">Schedule of Amortization of Deferred Expenses [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_ScheduleOfAmortizationOfDeferredExpensesTableTextBlock_lbl" xml:lang="en-US">Schedule of amortization of lease intangibles</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock" xlink:label="us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock" xlink:to="us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_lbl" xml:lang="en-US">Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_lbl" xml:lang="en-US">Schedule of estimated future amortization of lease intangibles</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfCashAndCashEquivalentsTableTextBlock" xlink:label="us-gaap_ScheduleOfCashAndCashEquivalentsTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfCashAndCashEquivalentsTableTextBlock" xlink:to="us-gaap_ScheduleOfCashAndCashEquivalentsTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfCashAndCashEquivalentsTableTextBlock_lbl" xml:lang="en-US">Schedule of Cash and Cash Equivalents [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfCashAndCashEquivalentsTableTextBlock_lbl" xml:lang="en-US">Schedule of cash, cash equivalents and cash held in escrow</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:to="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_lbl" xml:lang="en-US">Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_lbl" xml:lang="en-US">Schedule of reconciliation of basic and diluted net earnings per common share</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLeaseIncomeTableTextBlock" xlink:label="us-gaap_OperatingLeaseLeaseIncomeTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLeaseIncomeTableTextBlock" xlink:to="us-gaap_OperatingLeaseLeaseIncomeTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseLeaseIncomeTableTextBlock_lbl" xml:lang="en-US">Operating Lease, Lease Income [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingLeaseLeaseIncomeTableTextBlock_lbl" xml:lang="en-US">Summary of lease income</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedMaturityTableTextBlock" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedMaturityTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LessorOperatingLeasePaymentsToBeReceivedMaturityTableTextBlock" xlink:to="us-gaap_LessorOperatingLeasePaymentsToBeReceivedMaturityTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedMaturityTableTextBlock_lbl" xml:lang="en-US">Operating Leases, Future Minimum Payments Receivable [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedMaturityTableTextBlock_lbl" xml:lang="en-US">Summary of lease income to be received</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LeaseCostTableTextBlock" xlink:label="us-gaap_LeaseCostTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeaseCostTableTextBlock" xlink:to="us-gaap_LeaseCostTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LeaseCostTableTextBlock_lbl" xml:lang="en-US">Lease, Cost [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LeaseCostTableTextBlock_lbl" xml:lang="en-US">Summary of lease costs</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_lbl" xml:lang="en-US">Lessee, Operating Lease, Liability, Maturity [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_lbl" xml:lang="en-US">Summary of maturity analysis of operating lease liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityMaturityTableTextBlock" xlink:label="us-gaap_FinanceLeaseLiabilityMaturityTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityMaturityTableTextBlock" xlink:to="us-gaap_FinanceLeaseLiabilityMaturityTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FinanceLeaseLiabilityMaturityTableTextBlock_lbl" xml:lang="en-US">Finance Lease, Liability, Fiscal Year Maturity [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FinanceLeaseLiabilityMaturityTableTextBlock_lbl" xml:lang="en-US">Summary of maturity analysis of finance lease liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="us-gaap_LongtermDebtTypeAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongtermDebtTypeAxis" xlink:to="us-gaap_LongtermDebtTypeAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongtermDebtTypeAxis_lbl" xml:lang="en-US">Long-term Debt, Type [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="us-gaap_LongtermDebtTypeDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongtermDebtTypeDomain" xlink:to="us-gaap_LongtermDebtTypeDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongtermDebtTypeDomain_lbl" xml:lang="en-US">Long-term Debt, Type [Domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MortgagesMember" xlink:label="us-gaap_MortgagesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MortgagesMember" xlink:to="us-gaap_MortgagesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MortgagesMember_lbl" xml:lang="en-US">Mortgages [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnsecuredDebtMember" xlink:label="us-gaap_UnsecuredDebtMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnsecuredDebtMember" xlink:to="us-gaap_UnsecuredDebtMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UnsecuredDebtMember_lbl" xml:lang="en-US">Unsecured Debt [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SeniorUnsecuredNotesMember" xlink:label="adc_SeniorUnsecuredNotesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SeniorUnsecuredNotesMember" xlink:to="adc_SeniorUnsecuredNotesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SeniorUnsecuredNotesMember_lbl" xml:lang="en-US">Senior Unsecured Notes [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfDebtInstrumentsTextBlock" xlink:label="us-gaap_ScheduleOfDebtInstrumentsTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfDebtInstrumentsTextBlock" xlink:to="us-gaap_ScheduleOfDebtInstrumentsTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfDebtInstrumentsTextBlock_lbl" xml:lang="en-US">Schedule of Long-term Debt Instruments [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfDebtInstrumentsTextBlock_lbl" xml:lang="en-US">Schedule of long-term debt instruments</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock" xlink:label="us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock" xlink:to="us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_lbl" xml:lang="en-US">Schedule of Maturities of Long-term Debt [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_lbl" xml:lang="en-US">Schedule of maturities of long-term debt</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfStockholdersEquityTableTextBlock" xlink:label="us-gaap_ScheduleOfStockholdersEquityTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfStockholdersEquityTableTextBlock" xlink:to="us-gaap_ScheduleOfStockholdersEquityTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfStockholdersEquityTableTextBlock_lbl" xml:lang="en-US">Schedule of Stockholders Equity [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfStockholdersEquityTableTextBlock_lbl" xml:lang="en-US">Schedule of results of ATM programs</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfDividendsPayableTextBlock" xlink:label="us-gaap_ScheduleOfDividendsPayableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfDividendsPayableTextBlock" xlink:to="us-gaap_ScheduleOfDividendsPayableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfDividendsPayableTextBlock_lbl" xml:lang="en-US">Schedule of Dividends Payable [Table Text Block]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfNotionalAmountsOfOutstandingDerivativePositionsTableTextBlock" xlink:label="us-gaap_ScheduleOfNotionalAmountsOfOutstandingDerivativePositionsTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfNotionalAmountsOfOutstandingDerivativePositionsTableTextBlock" xlink:to="us-gaap_ScheduleOfNotionalAmountsOfOutstandingDerivativePositionsTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfNotionalAmountsOfOutstandingDerivativePositionsTableTextBlock_lbl" xml:lang="en-US">Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfNotionalAmountsOfOutstandingDerivativePositionsTableTextBlock_lbl" xml:lang="en-US">Schedule of notional amounts of outstanding derivative positions</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock" xlink:label="us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock" xlink:to="us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_lbl" xml:lang="en-US">Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_lbl" xml:lang="en-US">Schedule of derivative instruments in statement of financial position, fair value</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfCashFlowHedgesIncludedInAccumulatedOtherComprehensiveIncomeLossTableTextBlock" xlink:label="us-gaap_ScheduleOfCashFlowHedgesIncludedInAccumulatedOtherComprehensiveIncomeLossTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfCashFlowHedgesIncludedInAccumulatedOtherComprehensiveIncomeLossTableTextBlock" xlink:to="us-gaap_ScheduleOfCashFlowHedgesIncludedInAccumulatedOtherComprehensiveIncomeLossTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfCashFlowHedgesIncludedInAccumulatedOtherComprehensiveIncomeLossTableTextBlock_lbl" xml:lang="en-US">Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfCashFlowHedgesIncludedInAccumulatedOtherComprehensiveIncomeLossTableTextBlock_lbl" xml:lang="en-US">Schedule of cash flow hedges included in accumulated other comprehensive income (loss)</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OffsettingAssetsAndLiabilitiesTableTextBlock" xlink:label="adc_OffsettingAssetsAndLiabilitiesTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OffsettingAssetsAndLiabilitiesTableTextBlock" xlink:to="adc_OffsettingAssetsAndLiabilitiesTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OffsettingAssetsAndLiabilitiesTableTextBlock_lbl" xml:lang="en-US">A table of offsetting assets and liabilities, shown as a text block.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OffsettingAssetsAndLiabilitiesTableTextBlock_lbl" xml:lang="en-US">Offsetting Assets And Liabilities [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_OffsettingAssetsAndLiabilitiesTableTextBlock_lbl" xml:lang="en-US">Schedule of offsetting assets and liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfDerivativeLiabilitiesAtFairValueTableTextBlock" xlink:label="us-gaap_ScheduleOfDerivativeLiabilitiesAtFairValueTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfDerivativeLiabilitiesAtFairValueTableTextBlock" xlink:to="us-gaap_ScheduleOfDerivativeLiabilitiesAtFairValueTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfDerivativeLiabilitiesAtFairValueTableTextBlock_lbl" xml:lang="en-US">Schedule Of Derivative Liabilities At Fair Value [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfDerivativeLiabilitiesAtFairValueTableTextBlock_lbl" xml:lang="en-US">Schedule of assets and liabilities measured at fair value</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock" xlink:label="us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock" xlink:to="us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock_lbl" xml:lang="en-US">Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock_lbl" xml:lang="en-US">Schedule of restricted share activity</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock" xlink:to="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_lbl" xml:lang="en-US">Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_lbl" xml:lang="en-US">Schedule of valuation assumptions used</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfNonvestedPerformanceBasedUnitsActivityTableTextBlock" xlink:label="us-gaap_ScheduleOfNonvestedPerformanceBasedUnitsActivityTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfNonvestedPerformanceBasedUnitsActivityTableTextBlock" xlink:to="us-gaap_ScheduleOfNonvestedPerformanceBasedUnitsActivityTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfNonvestedPerformanceBasedUnitsActivityTableTextBlock_lbl" xml:lang="en-US">Schedule of Nonvested Performance-based Units Activity [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfNonvestedPerformanceBasedUnitsActivityTableTextBlock_lbl" xml:lang="en-US">Schedule of performance share and unit activity</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NatureOfOperationsTable" xlink:label="adc_NatureOfOperationsTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NatureOfOperationsTable" xlink:to="adc_NatureOfOperationsTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NatureOfOperationsTable_lbl" xml:lang="en-US">Nature of Operations [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_OwnershipAxis" xlink:label="srt_OwnershipAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_OwnershipAxis" xlink:to="srt_OwnershipAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_OwnershipAxis_lbl" xml:lang="en-US">Ownership [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_OwnershipDomain" xlink:label="srt_OwnershipDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_OwnershipDomain" xlink:to="srt_OwnershipDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_OwnershipDomain_lbl" xml:lang="en-US">Ownership [Domain]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AgreeRealtyCorporationMember" xlink:label="adc_AgreeRealtyCorporationMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AgreeRealtyCorporationMember" xlink:to="adc_AgreeRealtyCorporationMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AgreeRealtyCorporationMember_lbl" xml:lang="en-US">Agree Realty Corporation [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AgreeRealtyCorporationMember_lbl" xml:lang="en-US">Agree Realty Corporation [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PartnerTypeOfPartnersCapitalAccountAxis" xlink:label="us-gaap_PartnerTypeOfPartnersCapitalAccountAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PartnerTypeOfPartnersCapitalAccountAxis" xlink:to="us-gaap_PartnerTypeOfPartnersCapitalAccountAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PartnerTypeOfPartnersCapitalAccountAxis_lbl" xml:lang="en-US">Partner Type [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PartnerTypeOfPartnersCapitalAccountNameDomain" xlink:label="us-gaap_PartnerTypeOfPartnersCapitalAccountNameDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PartnerTypeOfPartnersCapitalAccountNameDomain" xlink:to="us-gaap_PartnerTypeOfPartnersCapitalAccountNameDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PartnerTypeOfPartnersCapitalAccountNameDomain_lbl" xml:lang="en-US">Partner Type of Partners' Capital Account, Name [Domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GeneralPartnerMember" xlink:label="us-gaap_GeneralPartnerMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GeneralPartnerMember" xlink:to="us-gaap_GeneralPartnerMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GeneralPartnerMember_lbl" xml:lang="en-US">General Partner [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NatureOfOperationsLineItems" xlink:label="adc_NatureOfOperationsLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NatureOfOperationsLineItems" xlink:to="adc_NatureOfOperationsLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NatureOfOperationsLineItems_lbl" xml:lang="en-US">Nature of Operations [Line Items]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest" xlink:label="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest" xlink:to="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest_lbl" xml:lang="en-US">Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest_lbl" xml:lang="en-US">Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RealEstateHeldForSaleLand" xlink:label="adc_RealEstateHeldForSaleLand" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RealEstateHeldForSaleLand" xlink:to="adc_RealEstateHeldForSaleLand_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RealEstateHeldForSaleLand_lbl" xml:lang="en-US">Gross amount as of investments in land held for sale, excluding real estate considered to be inventory of the entity.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RealEstateHeldForSaleLand_lbl" xml:lang="en-US">Real Estate Held For Sale Land</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="adc_RealEstateHeldForSaleLand_lbl" xml:lang="en-US">Land</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RealEstateHeldForSaleBuilding" xlink:label="adc_RealEstateHeldForSaleBuilding" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RealEstateHeldForSaleBuilding" xlink:to="adc_RealEstateHeldForSaleBuilding_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RealEstateHeldForSaleBuilding_lbl" xml:lang="en-US">Gross amount as of investments in buildings held for sale, excluding real estate considered to be inventory of the entity.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RealEstateHeldForSaleBuilding_lbl" xml:lang="en-US">Real Estate Held For Sale Building</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_RealEstateHeldForSaleBuilding_lbl" xml:lang="en-US">Building</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RealEstateHeldForSaleLeaseIntangibles" xlink:label="adc_RealEstateHeldForSaleLeaseIntangibles" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RealEstateHeldForSaleLeaseIntangibles" xlink:to="adc_RealEstateHeldForSaleLeaseIntangibles_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RealEstateHeldForSaleLeaseIntangibles_lbl" xml:lang="en-US">Gross amount as of investments in lease intangibles held for sale, excluding real estate considered to be inventory of the entity.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RealEstateHeldForSaleLeaseIntangibles_lbl" xml:lang="en-US">Real Estate Held For Sale Lease Intangibles</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_RealEstateHeldForSaleLeaseIntangibles_lbl" xml:lang="en-US">Lease intangibles - asset</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RealEstateHeldForSaleLeaseLiability" xlink:label="adc_RealEstateHeldForSaleLeaseLiability" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RealEstateHeldForSaleLeaseLiability" xlink:to="adc_RealEstateHeldForSaleLeaseLiability_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RealEstateHeldForSaleLeaseLiability_lbl" xml:lang="en-US">Gross amount as of investments in lease liabilities held for sale, excluding real estate considered to be inventory of the entity.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RealEstateHeldForSaleLeaseLiability_lbl" xml:lang="en-US">Real Estate Held For Sale Lease Liability</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="adc_RealEstateHeldForSaleLeaseLiability_lbl" xml:lang="en-US">Lease intangibles - (liability)</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RealEstateHeldForSaleGross" xlink:label="adc_RealEstateHeldForSaleGross" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RealEstateHeldForSaleGross" xlink:to="adc_RealEstateHeldForSaleGross_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RealEstateHeldForSaleGross_lbl" xml:lang="en-US">Gross amount as of investments in land, buildings and lease intangibles held for sale, excluding real estate considered to be inventory of the entity.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RealEstateHeldForSaleGross_lbl" xml:lang="en-US">Real Estate Held for Sale, Gross</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="adc_RealEstateHeldForSaleGross_lbl" xml:lang="en-US">Real Estate Held-for-sale, gross</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RealEstateHeldForSaleAccumulatedDepreciation" xlink:label="adc_RealEstateHeldForSaleAccumulatedDepreciation" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RealEstateHeldForSaleAccumulatedDepreciation" xlink:to="adc_RealEstateHeldForSaleAccumulatedDepreciation_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RealEstateHeldForSaleAccumulatedDepreciation_lbl" xml:lang="en-US">The cumulative amount of depreciation for real estate property held for sale.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RealEstateHeldForSaleAccumulatedDepreciation_lbl" xml:lang="en-US">Real Estate Held For Sale Accumulated Depreciation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="adc_RealEstateHeldForSaleAccumulatedDepreciation_lbl" xml:lang="en-US">Accumulated depreciation and amortization, net</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable" xlink:label="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable" xlink:to="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_lbl" xml:lang="en-US">Schedule of Finite-Lived Intangible Assets [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:to="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_lbl" xml:lang="en-US">Finite-Lived Intangible Assets by Major Class [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_lbl" xml:lang="en-US">Finite-Lived Intangible Assets, Major Class Name [Domain]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CreditFacilityFinancingCostsMember" xlink:label="adc_CreditFacilityFinancingCostsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CreditFacilityFinancingCostsMember" xlink:to="adc_CreditFacilityFinancingCostsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CreditFacilityFinancingCostsMember_lbl" xml:lang="en-US">Lease intangibles (in-place)</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LeasingCostsMember" xlink:label="adc_LeasingCostsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LeasingCostsMember" xlink:to="adc_LeasingCostsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LeasingCostsMember_lbl" xml:lang="en-US">Lease intangibles (above-market)</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BelowMarketLeasesMember" xlink:label="adc_BelowMarketLeasesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BelowMarketLeasesMember" xlink:to="adc_BelowMarketLeasesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BelowMarketLeasesMember_lbl" xml:lang="en-US">Leases acquired as part of a real property acquisition at below market lease rate.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BelowMarketLeasesMember_lbl" xml:lang="en-US">Lease intangibles (below-market)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:label="us-gaap_FiniteLivedIntangibleAssetsLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:to="us-gaap_FiniteLivedIntangibleAssetsLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsLineItems_lbl" xml:lang="en-US">Finite-Lived Intangible Assets [Line Items]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract" xlink:label="us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract" xlink:to="us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_lbl" xml:lang="en-US">Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_lbl" xml:lang="en-US">Year Ending December 31,</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AmortizationOfDeferredCharges" xlink:label="us-gaap_AmortizationOfDeferredCharges" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AmortizationOfDeferredCharges" xlink:to="us-gaap_AmortizationOfDeferredCharges_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AmortizationOfDeferredCharges_lbl" xml:lang="en-US">Amortization of Deferred Charges</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AmortizationOfDeferredCharges_lbl" xml:lang="en-US">Amortization of deferred charges</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AmortizationOfBelowMarketLease" xlink:label="us-gaap_AmortizationOfBelowMarketLease" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AmortizationOfBelowMarketLease" xlink:to="us-gaap_AmortizationOfBelowMarketLease_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AmortizationOfBelowMarketLease_lbl" xml:lang="en-US">Amortization of Below Market Lease</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_AmortizationOfBelowMarketLease_lbl" xml:lang="en-US">Amortization of below market lease</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_lbl" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_lbl" xml:lang="en-US">2022</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_lbl" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Two</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_lbl" xml:lang="en-US">2023</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_lbl" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Three</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_lbl" xml:lang="en-US">2024</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_lbl" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Four</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_lbl" xml:lang="en-US">2025</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_lbl" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_lbl" xml:lang="en-US">2026</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_lbl" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, after Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_lbl" xml:lang="en-US">Thereafter</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsNet" xlink:to="us-gaap_FiniteLivedIntangibleAssetsNet_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet_lbl" xml:lang="en-US">Finite-Lived Intangible Assets, Net, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet_lbl" xml:lang="en-US">Total</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BelowMarketLeaseAmortizationIncomeNextTwelveMonths" xlink:label="us-gaap_BelowMarketLeaseAmortizationIncomeNextTwelveMonths" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BelowMarketLeaseAmortizationIncomeNextTwelveMonths" xlink:to="us-gaap_BelowMarketLeaseAmortizationIncomeNextTwelveMonths_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BelowMarketLeaseAmortizationIncomeNextTwelveMonths_lbl" xml:lang="en-US">Below Market Lease, Amortization Income, Next Twelve Months</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_BelowMarketLeaseAmortizationIncomeNextTwelveMonths_lbl" xml:lang="en-US">2022</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BelowMarketLeaseAmortizationIncomeYearTwo" xlink:label="us-gaap_BelowMarketLeaseAmortizationIncomeYearTwo" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BelowMarketLeaseAmortizationIncomeYearTwo" xlink:to="us-gaap_BelowMarketLeaseAmortizationIncomeYearTwo_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BelowMarketLeaseAmortizationIncomeYearTwo_lbl" xml:lang="en-US">Below Market Lease, Amortization Income, Year Two</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_BelowMarketLeaseAmortizationIncomeYearTwo_lbl" xml:lang="en-US">2023</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BelowMarketLeaseAmortizationIncomeYearThree" xlink:label="us-gaap_BelowMarketLeaseAmortizationIncomeYearThree" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BelowMarketLeaseAmortizationIncomeYearThree" xlink:to="us-gaap_BelowMarketLeaseAmortizationIncomeYearThree_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BelowMarketLeaseAmortizationIncomeYearThree_lbl" xml:lang="en-US">Below Market Lease, Amortization Income, Year Three</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_BelowMarketLeaseAmortizationIncomeYearThree_lbl" xml:lang="en-US">2024</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BelowMarketLeaseAmortizationIncomeYearFour" xlink:label="us-gaap_BelowMarketLeaseAmortizationIncomeYearFour" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BelowMarketLeaseAmortizationIncomeYearFour" xlink:to="us-gaap_BelowMarketLeaseAmortizationIncomeYearFour_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BelowMarketLeaseAmortizationIncomeYearFour_lbl" xml:lang="en-US">Below Market Lease, Amortization Income, Year Four</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_BelowMarketLeaseAmortizationIncomeYearFour_lbl" xml:lang="en-US">2025</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BelowMarketLeaseAmortizationIncomeYearFive" xlink:label="us-gaap_BelowMarketLeaseAmortizationIncomeYearFive" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BelowMarketLeaseAmortizationIncomeYearFive" xlink:to="us-gaap_BelowMarketLeaseAmortizationIncomeYearFive_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BelowMarketLeaseAmortizationIncomeYearFive_lbl" xml:lang="en-US">Below Market Lease, Amortization Income, Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_BelowMarketLeaseAmortizationIncomeYearFive_lbl" xml:lang="en-US">2026</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BelowMarketLeaseAmortizationIncomeAfterYearFive" xlink:label="us-gaap_BelowMarketLeaseAmortizationIncomeAfterYearFive" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BelowMarketLeaseAmortizationIncomeAfterYearFive" xlink:to="us-gaap_BelowMarketLeaseAmortizationIncomeAfterYearFive_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BelowMarketLeaseAmortizationIncomeAfterYearFive_lbl" xml:lang="en-US">Below Market Lease, Amortization Income, after Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_BelowMarketLeaseAmortizationIncomeAfterYearFive_lbl" xml:lang="en-US">Thereafter</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract_lbl" xml:lang="en-US">Cash and Cash Equivalents, at Carrying Value [Abstract]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfEarningsPerShareDilutedByCommonClassTable" xlink:label="us-gaap_ScheduleOfEarningsPerShareDilutedByCommonClassTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfEarningsPerShareDilutedByCommonClassTable" xlink:to="us-gaap_ScheduleOfEarningsPerShareDilutedByCommonClassTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfEarningsPerShareDilutedByCommonClassTable_lbl" xml:lang="en-US">Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ForwardContractIndexedToIssuersEquityTypeAxis" xlink:label="us-gaap_ForwardContractIndexedToIssuersEquityTypeAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ForwardContractIndexedToIssuersEquityTypeAxis" xlink:to="us-gaap_ForwardContractIndexedToIssuersEquityTypeAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ForwardContractIndexedToIssuersEquityTypeAxis_lbl" xml:lang="en-US">Forward Contract Indexed to Issuer's Equity, Type [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ForwardContractIndexedToIssuersEquityTypeDomain" xlink:label="us-gaap_ForwardContractIndexedToIssuersEquityTypeDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ForwardContractIndexedToIssuersEquityTypeDomain" xlink:to="us-gaap_ForwardContractIndexedToIssuersEquityTypeDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ForwardContractIndexedToIssuersEquityTypeDomain_lbl" xml:lang="en-US">Forward Contract Indexed to Issuer's Equity, Type [Domain]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_September2018ForwardSalesMember" xlink:label="adc_September2018ForwardSalesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_September2018ForwardSalesMember" xlink:to="adc_September2018ForwardSalesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_September2018ForwardSalesMember_lbl" xml:lang="en-US">September 2018 Forward Sales [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_September2018ForwardSalesMember_lbl" xml:lang="en-US">September 2018 Forward Sales [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_April2019ForwardEquityMember" xlink:label="adc_April2019ForwardEquityMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_April2019ForwardEquityMember" xlink:to="adc_April2019ForwardEquityMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_April2019ForwardEquityMember_lbl" xml:lang="en-US">April2019 Forward Equity [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_April2019ForwardEquityMember_lbl" xml:lang="en-US">April 2019 Forward Equity</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AtMarket2019ForwardEquityMember" xlink:label="adc_AtMarket2019ForwardEquityMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AtMarket2019ForwardEquityMember" xlink:to="adc_AtMarket2019ForwardEquityMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AtMarket2019ForwardEquityMember_lbl" xml:lang="en-US">At The Market 2019 Forward Equity [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AtMarket2019ForwardEquityMember_lbl" xml:lang="en-US">2019 ATM Forward Equity</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AtMarket2020ForwardEquityMember" xlink:label="adc_AtMarket2020ForwardEquityMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AtMarket2020ForwardEquityMember" xlink:to="adc_AtMarket2020ForwardEquityMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AtMarket2020ForwardEquityMember_lbl" xml:lang="en-US">At The Market 2020 Forward Equity [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AtMarket2020ForwardEquityMember_lbl" xml:lang="en-US">2020 ATM Forward Equity</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_April2020ForwardEquityMember" xlink:label="adc_April2020ForwardEquityMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_April2020ForwardEquityMember" xlink:to="adc_April2020ForwardEquityMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_April2020ForwardEquityMember_lbl" xml:lang="en-US">April 2020 Forward Equity [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_April2020ForwardEquityMember_lbl" xml:lang="en-US">April 2020 Forward Equity</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AtMarket2021ForwardEquityMember" xlink:label="adc_AtMarket2021ForwardEquityMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AtMarket2021ForwardEquityMember" xlink:to="adc_AtMarket2021ForwardEquityMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AtMarket2021ForwardEquityMember_lbl" xml:lang="en-US">At Market 2021 Forward Equity [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AtMarket2021ForwardEquityMember_lbl" xml:lang="en-US">2021 ATM Forward Equity</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_December2021ForwardEquityMember" xlink:label="adc_December2021ForwardEquityMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_December2021ForwardEquityMember" xlink:to="adc_December2021ForwardEquityMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_December2021ForwardEquityMember_lbl" xml:lang="en-US">Represents December 2021 forward equity offering.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_December2021ForwardEquityMember_lbl" xml:lang="en-US">December 2021 Forward Offering</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:to="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_lbl" xml:lang="en-US">Antidilutive Securities [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain" xlink:label="us-gaap_AntidilutiveSecuritiesNameDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AntidilutiveSecuritiesNameDomain" xlink:to="us-gaap_AntidilutiveSecuritiesNameDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AntidilutiveSecuritiesNameDomain_lbl" xml:lang="en-US">Antidilutive Securities, Name [Domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ForwardContractsMember" xlink:label="us-gaap_ForwardContractsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ForwardContractsMember" xlink:to="us-gaap_ForwardContractsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ForwardContractsMember_lbl" xml:lang="en-US">Forward Sale Agreement [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestrictedStockMember" xlink:label="us-gaap_RestrictedStockMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedStockMember" xlink:to="us-gaap_RestrictedStockMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestrictedStockMember_lbl" xml:lang="en-US">Restricted Stock [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PerformanceUnitsMember" xlink:label="adc_PerformanceUnitsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PerformanceUnitsMember" xlink:to="adc_PerformanceUnitsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PerformanceUnitsMember_lbl" xml:lang="en-US">Performance Units [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PerformanceUnitsMember_lbl" xml:lang="en-US">Performance Units [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EarningsPerShareDilutedLineItems" xlink:label="us-gaap_EarningsPerShareDilutedLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareDilutedLineItems" xlink:to="us-gaap_EarningsPerShareDilutedLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerShareDilutedLineItems_lbl" xml:lang="en-US">Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_EarningsPerShareDilutedLineItems_lbl" xml:lang="en-US">Earnings Per Share Basic And Diluted [Line Items]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NetIncomeLossUnvestedRestrictedStock" xlink:label="adc_NetIncomeLossUnvestedRestrictedStock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NetIncomeLossUnvestedRestrictedStock" xlink:to="adc_NetIncomeLossUnvestedRestrictedStock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NetIncomeLossUnvestedRestrictedStock_lbl" xml:lang="en-US">The amount net income (loss) attributable to unvested restricted stocks.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NetIncomeLossUnvestedRestrictedStock_lbl" xml:lang="en-US">Net Income (Loss), Unvested Restricted Stock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="adc_NetIncomeLossUnvestedRestrictedStock_lbl" xml:lang="en-US">Less: Income attributable to unvested restricted shares</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted" xlink:to="us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_lbl" xml:lang="en-US">Net Income (Loss) Available to Common Stockholders, Diluted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_lbl" xml:lang="en-US">Net income used in basic and diluted earnings per share</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesIssuedBasic" xlink:label="us-gaap_WeightedAverageNumberOfSharesIssuedBasic" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfSharesIssuedBasic" xlink:to="us-gaap_WeightedAverageNumberOfSharesIssuedBasic_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WeightedAverageNumberOfSharesIssuedBasic_lbl" xml:lang="en-US">Weighted Average Number of Shares Issued, Basic</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_WeightedAverageNumberOfSharesIssuedBasic_lbl" xml:lang="en-US">Weighted average number of common shares outstanding</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesRestrictedStock" xlink:label="us-gaap_WeightedAverageNumberOfSharesRestrictedStock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfSharesRestrictedStock" xlink:to="us-gaap_WeightedAverageNumberOfSharesRestrictedStock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WeightedAverageNumberOfSharesRestrictedStock_lbl" xml:lang="en-US">Weighted Average Number of Shares, Restricted Stock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_WeightedAverageNumberOfSharesRestrictedStock_lbl" xml:lang="en-US">Less: Unvested restricted stock</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract" xlink:label="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract" xlink:to="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_lbl" xml:lang="en-US">Effect of dilutive securities:</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" xlink:label="us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" xlink:to="us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_lbl" xml:lang="en-US">Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_lbl" xml:lang="en-US">Share-based compensation</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncrementalCommonSharesAttributableToEquityForwardAgreements" xlink:label="us-gaap_IncrementalCommonSharesAttributableToEquityForwardAgreements" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncrementalCommonSharesAttributableToEquityForwardAgreements" xlink:to="us-gaap_IncrementalCommonSharesAttributableToEquityForwardAgreements_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncrementalCommonSharesAttributableToEquityForwardAgreements_lbl" xml:lang="en-US">Incremental Common Shares Attributable to Dilutive Effect of Equity Forward Agreements</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncrementalCommonSharesAttributableToEquityForwardAgreements_lbl" xml:lang="en-US">Forward equity offering</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:to="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xml:lang="en-US">Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AccountingPoliciesTable" xlink:label="adc_AccountingPoliciesTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AccountingPoliciesTable" xlink:to="adc_AccountingPoliciesTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AccountingPoliciesTable_lbl" xml:lang="en-US">Accounting Policies [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_TitleOfIndividualAxis" xlink:label="srt_TitleOfIndividualAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_TitleOfIndividualAxis" xlink:to="srt_TitleOfIndividualAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_TitleOfIndividualAxis_lbl" xml:lang="en-US">Title of Individual [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_TitleOfIndividualWithRelationshipToEntityDomain" xlink:label="srt_TitleOfIndividualWithRelationshipToEntityDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_TitleOfIndividualWithRelationshipToEntityDomain" xlink:to="srt_TitleOfIndividualWithRelationshipToEntityDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_TitleOfIndividualWithRelationshipToEntityDomain_lbl" xml:lang="en-US">Relationship to Entity [Domain]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PresidentAndChiefExecutiveOfficerMember" xlink:label="adc_PresidentAndChiefExecutiveOfficerMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PresidentAndChiefExecutiveOfficerMember" xlink:to="adc_PresidentAndChiefExecutiveOfficerMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PresidentAndChiefExecutiveOfficerMember_lbl" xml:lang="en-US">Person with designation of president and chief executive officer.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PresidentAndChiefExecutiveOfficerMember_lbl" xml:lang="en-US">President And Chief Executive Officer [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherOwnershipInterestMember" xlink:label="us-gaap_OtherOwnershipInterestMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherOwnershipInterestMember" xlink:to="us-gaap_OtherOwnershipInterestMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherOwnershipInterestMember_lbl" xml:lang="en-US">Third party [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:to="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl" xml:lang="en-US">Property, Plant and Equipment, Type [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:to="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl" xml:lang="en-US">Property, Plant and Equipment, Type [Domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BuildingMember" xlink:label="us-gaap_BuildingMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BuildingMember" xlink:to="us-gaap_BuildingMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BuildingMember_lbl" xml:lang="en-US">Building [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BuildingImprovementsMember" xlink:label="us-gaap_BuildingImprovementsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BuildingImprovementsMember" xlink:to="us-gaap_BuildingImprovementsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BuildingImprovementsMember_lbl" xml:lang="en-US">Building Improvements [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeAxis" xlink:label="srt_RangeAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RangeAxis" xlink:to="srt_RangeAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_RangeAxis_lbl" xml:lang="en-US">Range [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember" xlink:label="srt_RangeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RangeMember" xlink:to="srt_RangeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_RangeMember_lbl" xml:lang="en-US">Range [Domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MinimumMember" xlink:label="srt_MinimumMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_MinimumMember" xlink:to="srt_MinimumMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_MinimumMember_lbl" xml:lang="en-US">Minimum [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MaximumMember" xlink:label="srt_MaximumMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_MaximumMember" xlink:to="srt_MaximumMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_MaximumMember_lbl" xml:lang="en-US">Maximum [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:label="us-gaap_IncomeStatementLocationAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementLocationAxis" xlink:to="us-gaap_IncomeStatementLocationAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeStatementLocationAxis_lbl" xml:lang="en-US">Income Statement Location [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="us-gaap_IncomeStatementLocationDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementLocationDomain" xlink:to="us-gaap_IncomeStatementLocationDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeStatementLocationDomain_lbl" xml:lang="en-US">Income Statement Location [Domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GeneralAndAdministrativeExpenseMember" xlink:label="us-gaap_GeneralAndAdministrativeExpenseMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GeneralAndAdministrativeExpenseMember" xlink:to="us-gaap_GeneralAndAdministrativeExpenseMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GeneralAndAdministrativeExpenseMember_lbl" xml:lang="en-US">General and Administrative Expense</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis" xlink:label="us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis" xlink:to="us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis_lbl" xml:lang="en-US">Billing Status, Type [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ReceivablesBillingStatusDomain" xlink:label="us-gaap_ReceivablesBillingStatusDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReceivablesBillingStatusDomain" xlink:to="us-gaap_ReceivablesBillingStatusDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ReceivablesBillingStatusDomain_lbl" xml:lang="en-US">Receivables Billing Status [Domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnbilledRevenuesMember" xlink:label="us-gaap_UnbilledRevenuesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnbilledRevenuesMember" xlink:to="us-gaap_UnbilledRevenuesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UnbilledRevenuesMember_lbl" xml:lang="en-US">Unbilled Revenues [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnusualOrInfrequentItemAxis" xlink:label="us-gaap_UnusualOrInfrequentItemAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnusualOrInfrequentItemAxis" xlink:to="us-gaap_UnusualOrInfrequentItemAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UnusualOrInfrequentItemAxis_lbl" xml:lang="en-US">Unusual or Infrequent Item, or Both [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnusualOrInfrequentItemDomain" xlink:label="us-gaap_UnusualOrInfrequentItemDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnusualOrInfrequentItemDomain" xlink:to="us-gaap_UnusualOrInfrequentItemDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UnusualOrInfrequentItemDomain_lbl" xml:lang="en-US">Unusual or Infrequent Item, or Both [Domain]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_Covid19Member" xlink:label="adc_Covid19Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_Covid19Member" xlink:to="adc_Covid19Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_Covid19Member_lbl" xml:lang="en-US">Covid-19 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_Covid19Member_lbl" xml:lang="en-US">Covid-19 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AccountingPoliciesLineItems" xlink:label="adc_AccountingPoliciesLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AccountingPoliciesLineItems" xlink:to="adc_AccountingPoliciesLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AccountingPoliciesLineItems_lbl" xml:lang="en-US">Accounting Policies [Line Items]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest" xlink:label="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest" xlink:to="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest_lbl" xml:lang="en-US">Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest_lbl" xml:lang="en-US">Non controlling interest</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding" xlink:label="us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding" xlink:to="us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding_lbl" xml:lang="en-US">Limited Partners' Capital Account, Units Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding_lbl" xml:lang="en-US">Outstanding units</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NumberOfRealEstatePropertiesHeldForSale" xlink:label="adc_NumberOfRealEstatePropertiesHeldForSale" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NumberOfRealEstatePropertiesHeldForSale" xlink:to="adc_NumberOfRealEstatePropertiesHeldForSale_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NumberOfRealEstatePropertiesHeldForSale_lbl" xml:lang="en-US">Number Of Real Estate Properties Held-For-Sale.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NumberOfRealEstatePropertiesHeldForSale_lbl" xml:lang="en-US">Number Of Real Estate Properties Held-For-Sale</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_NumberOfRealEstatePropertiesHeldForSale_lbl" xml:lang="en-US">Number of real estate properties held-for-sale</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:label="us-gaap_PropertyPlantAndEquipmentUsefulLife" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:to="us-gaap_PropertyPlantAndEquipmentUsefulLife_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentUsefulLife_lbl" xml:lang="en-US">Property, Plant and Equipment, Useful Life</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PropertyPlantAndEquipmentUsefulLife_lbl" xml:lang="en-US">Useful life</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashUninsuredAmount" xlink:label="us-gaap_CashUninsuredAmount" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashUninsuredAmount" xlink:to="us-gaap_CashUninsuredAmount_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashUninsuredAmount_lbl" xml:lang="en-US">Cash in Excess of FDIC Insured Amounts</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CashUninsuredAmount_lbl" xml:lang="en-US">Cash in excess of FDIC insured amounts</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_StraightLineRentReceivables" xlink:label="adc_StraightLineRentReceivables" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_StraightLineRentReceivables" xlink:to="adc_StraightLineRentReceivables_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_StraightLineRentReceivables_lbl" xml:lang="en-US">Amount of right to consideration from customer for renting of property in normal course of business.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_StraightLineRentReceivables_lbl" xml:lang="en-US">Straight Line Rent Receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_StraightLineRentReceivables_lbl" xml:lang="en-US">Straight-line rent receivables</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LessorOperatingLeaseAssumptionsAndJudgmentsNumberOfTenantsCollectionsNoLongerProbable" xlink:label="adc_LessorOperatingLeaseAssumptionsAndJudgmentsNumberOfTenantsCollectionsNoLongerProbable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LessorOperatingLeaseAssumptionsAndJudgmentsNumberOfTenantsCollectionsNoLongerProbable" xlink:to="adc_LessorOperatingLeaseAssumptionsAndJudgmentsNumberOfTenantsCollectionsNoLongerProbable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LessorOperatingLeaseAssumptionsAndJudgmentsNumberOfTenantsCollectionsNoLongerProbable_lbl" xml:lang="en-US">Lessor, Operating Lease, Assumptions and Judgments, Number Of Tenants, Collections No Longer Probable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LessorOperatingLeaseAssumptionsAndJudgmentsNumberOfTenantsCollectionsNoLongerProbable_lbl" xml:lang="en-US">Lessor, Operating Lease, Assumptions and Judgments, Number Of Tenants, Collections No Longer Probable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_LessorOperatingLeaseAssumptionsAndJudgmentsNumberOfTenantsCollectionsNoLongerProbable_lbl" xml:lang="en-US">Number of tenants for whom, collections no longer probable</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivable" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllowanceForDoubtfulAccountsReceivable" xlink:to="us-gaap_AllowanceForDoubtfulAccountsReceivable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivable_lbl" xml:lang="en-US">Allowance For Doubtful Accounts Receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivable_lbl" xml:lang="en-US">Allowance for doubtful accounts receivable (in dollars)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountsReceivableGross" xlink:label="us-gaap_AccountsReceivableGross" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsReceivableGross" xlink:to="us-gaap_AccountsReceivableGross_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsReceivableGross_lbl" xml:lang="en-US">Accounts Receivable, Gross</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NumberOfReportableSegments" xlink:label="us-gaap_NumberOfReportableSegments" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NumberOfReportableSegments" xlink:to="us-gaap_NumberOfReportableSegments_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NumberOfReportableSegments_lbl" xml:lang="en-US">Number of Reportable Segments</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AgreementAutoRenewalPeriod" xlink:label="adc_AgreementAutoRenewalPeriod" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AgreementAutoRenewalPeriod" xlink:to="adc_AgreementAutoRenewalPeriod_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AgreementAutoRenewalPeriod_lbl" xml:lang="en-US">Represents the information pertaining to agreement to auto renewal period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AgreementAutoRenewalPeriod_lbl" xml:lang="en-US">Agreement Auto Renewal Period</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AgreementNonRenewalNoticePeriod" xlink:label="adc_AgreementNonRenewalNoticePeriod" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AgreementNonRenewalNoticePeriod" xlink:to="adc_AgreementNonRenewalNoticePeriod_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AgreementNonRenewalNoticePeriod_lbl" xml:lang="en-US">Represents the information pertaining to agreement non renewal period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AgreementNonRenewalNoticePeriod_lbl" xml:lang="en-US">Agreement Non Renewal, Notice Period</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OneTimeExtensionBonus" xlink:label="adc_OneTimeExtensionBonus" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OneTimeExtensionBonus" xlink:to="adc_OneTimeExtensionBonus_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OneTimeExtensionBonus_lbl" xml:lang="en-US">Amount of one time extension bonus paid.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OneTimeExtensionBonus_lbl" xml:lang="en-US">One-Time Extension Bonus</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_OneTimeExtensionBonus_lbl" xml:lang="en-US">One-time extension bonus</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredRentReceivablesNet" xlink:label="us-gaap_DeferredRentReceivablesNet" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredRentReceivablesNet" xlink:to="us-gaap_DeferredRentReceivablesNet_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredRentReceivablesNet_lbl" xml:lang="en-US">Deferred Rent Receivables, Net</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PercentageOfPortfolioLeased" xlink:label="adc_PercentageOfPortfolioLeased" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PercentageOfPortfolioLeased" xlink:to="adc_PercentageOfPortfolioLeased_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PercentageOfPortfolioLeased_lbl" xml:lang="en-US">Represents the percentage of portfolio leased.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PercentageOfPortfolioLeased_lbl" xml:lang="en-US">Percentage Of Portfolio Leased</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_PercentageOfPortfolioLeased_lbl" xml:lang="en-US">Percentage of portfolio leased</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LessorOperatingLeaseTermOfContract" xlink:label="us-gaap_LessorOperatingLeaseTermOfContract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LessorOperatingLeaseTermOfContract" xlink:to="us-gaap_LessorOperatingLeaseTermOfContract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LessorOperatingLeaseTermOfContract_lbl" xml:lang="en-US">Lessor, Operating Lease, Term of Contract</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LessorOperatingLeaseTermOfContract_lbl" xml:lang="en-US">Weighted average remaining lease term</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PercentageOfAnnualizedBaseRentDerived" xlink:label="adc_PercentageOfAnnualizedBaseRentDerived" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PercentageOfAnnualizedBaseRentDerived" xlink:to="adc_PercentageOfAnnualizedBaseRentDerived_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PercentageOfAnnualizedBaseRentDerived_lbl" xml:lang="en-US">Represents the percentage of annualized base rent derived from tenants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PercentageOfAnnualizedBaseRentDerived_lbl" xml:lang="en-US">Percentage of Annualized Base Rent Derived</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_PercentageOfAnnualizedBaseRentDerived_lbl" xml:lang="en-US">Annualized base rent derived from tenants (as a percent)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LessorOperatingLeaseExistenceOfOptionToExtend" xlink:label="us-gaap_LessorOperatingLeaseExistenceOfOptionToExtend" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LessorOperatingLeaseExistenceOfOptionToExtend" xlink:to="us-gaap_LessorOperatingLeaseExistenceOfOptionToExtend_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LessorOperatingLeaseExistenceOfOptionToExtend_lbl" xml:lang="en-US">Lessor, Operating Lease, Existence of Option to Extend [true false]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LessorOperatingLeaseExistenceOfOptionToExtend_lbl" xml:lang="en-US">Option to extend lease</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LeasePracticalExpedientsPackage" xlink:label="us-gaap_LeasePracticalExpedientsPackage" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeasePracticalExpedientsPackage" xlink:to="us-gaap_LeasePracticalExpedientsPackage_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LeasePracticalExpedientsPackage_lbl" xml:lang="en-US">Lease, Practical Expedients, Package [true false]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LeasePracticalExpedientsPackage_lbl" xml:lang="en-US">Lease, practical expedients</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AlternativePresentationLessorLeaseIncomeAbstract" xlink:label="us-gaap_AlternativePresentationLessorLeaseIncomeAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AlternativePresentationLessorLeaseIncomeAbstract" xlink:to="us-gaap_AlternativePresentationLessorLeaseIncomeAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AlternativePresentationLessorLeaseIncomeAbstract_lbl" xml:lang="en-US">Alternative Presentation, Lessor Lease Income [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AlternativePresentationLessorLeaseIncomeAbstract_lbl" xml:lang="en-US">Lease Income</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLeaseIncome" xlink:label="us-gaap_OperatingLeaseLeaseIncome" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLeaseIncome" xlink:to="us-gaap_OperatingLeaseLeaseIncome_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseLeaseIncome_lbl" xml:lang="en-US">Operating Lease, Lease Income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_OperatingLeaseLeaseIncome_lbl" xml:lang="en-US">Total lease payments</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseVariableLeaseIncome" xlink:label="us-gaap_OperatingLeaseVariableLeaseIncome" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseVariableLeaseIncome" xlink:to="us-gaap_OperatingLeaseVariableLeaseIncome_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseVariableLeaseIncome_lbl" xml:lang="en-US">Variable Lease, Income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingLeaseVariableLeaseIncome_lbl" xml:lang="en-US">Less: Operating cost reimbursements and percentage rents</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLeaseIncomeLeasePayments" xlink:label="us-gaap_OperatingLeaseLeaseIncomeLeasePayments" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLeaseIncomeLeasePayments" xlink:to="us-gaap_OperatingLeaseLeaseIncomeLeasePayments_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseLeaseIncomeLeasePayments_lbl" xml:lang="en-US">Lease Income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingLeaseLeaseIncomeLeasePayments_lbl" xml:lang="en-US">Total non-variable lease payments</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsFiscalYearMaturityAbstract" xlink:label="us-gaap_LessorOperatingLeasePaymentsFiscalYearMaturityAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LessorOperatingLeasePaymentsFiscalYearMaturityAbstract" xlink:to="us-gaap_LessorOperatingLeasePaymentsFiscalYearMaturityAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LessorOperatingLeasePaymentsFiscalYearMaturityAbstract_lbl" xml:lang="en-US">Future non-variable lease payments</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths" xlink:to="us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths_lbl" xml:lang="en-US">Lessor, Operating Lease, Payments to be Received, Next Twelve Months</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths_lbl" xml:lang="en-US">2022</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears" xlink:to="us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears_lbl" xml:lang="en-US">Lessor, Operating Lease, Payments to be Received, Two Years</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears_lbl" xml:lang="en-US">2023</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears" xlink:to="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears_lbl" xml:lang="en-US">Lessor, Operating Lease, Payments to be Received, Three Years</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears_lbl" xml:lang="en-US">2024</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears" xlink:to="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears_lbl" xml:lang="en-US">Lessor, Operating Lease, Payments to be Received, Four Years</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears_lbl" xml:lang="en-US">2025</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears" xlink:to="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears_lbl" xml:lang="en-US">Lessor, Operating Lease, Payments to be Received, Five Years</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears_lbl" xml:lang="en-US">2026</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedThereafter" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThereafter" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThereafter" xlink:to="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThereafter_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThereafter_lbl" xml:lang="en-US">Lessor, Operating Lease, Payments to be Received, Thereafter</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThereafter_lbl" xml:lang="en-US">Thereafter</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceived" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceived" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LessorOperatingLeasePaymentsToBeReceived" xlink:to="us-gaap_LessorOperatingLeasePaymentsToBeReceived_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceived_lbl" xml:lang="en-US">Lessor, Operating Lease, Payments to be Received</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceived_lbl" xml:lang="en-US">Lease payments receivable</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredRevenue" xlink:label="us-gaap_DeferredRevenue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredRevenue" xlink:to="us-gaap_DeferredRevenue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredRevenue_lbl" xml:lang="en-US">Deferred Revenue</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DeferredRevenue_lbl" xml:lang="en-US">Deferred revenue</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeLeaseDescriptionTable" xlink:label="us-gaap_LesseeLeaseDescriptionTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeLeaseDescriptionTable" xlink:to="us-gaap_LesseeLeaseDescriptionTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LesseeLeaseDescriptionTable_lbl" xml:lang="en-US">Lessee, Lease, Description [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeLeaseDescriptionLineItems" xlink:label="us-gaap_LesseeLeaseDescriptionLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeLeaseDescriptionLineItems" xlink:to="us-gaap_LesseeLeaseDescriptionLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LesseeLeaseDescriptionLineItems_lbl" xml:lang="en-US">Lessee, Lease, Description [Line Items]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LeaseCostAbstract" xlink:label="us-gaap_LeaseCostAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeaseCostAbstract" xlink:to="us-gaap_LeaseCostAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LeaseCostAbstract_lbl" xml:lang="en-US">Lease, Cost [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LeaseCostAbstract_lbl" xml:lang="en-US">Lease costs</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiability" xlink:label="us-gaap_OperatingLeaseLiability" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiability" xlink:to="us-gaap_OperatingLeaseLiability_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xml:lang="en-US">Operating Lease, Liability</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xml:lang="en-US">Lease liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xml:lang="en-US">Total lease liabilities</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FinanceLeaseRightOfUseAssetAmortizationAndInterestExpense" xlink:label="adc_FinanceLeaseRightOfUseAssetAmortizationAndInterestExpense" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FinanceLeaseRightOfUseAssetAmortizationAndInterestExpense" xlink:to="adc_FinanceLeaseRightOfUseAssetAmortizationAndInterestExpense_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FinanceLeaseRightOfUseAssetAmortizationAndInterestExpense_lbl" xml:lang="en-US">Amount of amortization expense attributable to right-of-use asset and interest expense on finance lease liability.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FinanceLeaseRightOfUseAssetAmortizationAndInterestExpense_lbl" xml:lang="en-US">Finance Lease Right-Of-Use Asset Amortization And Interest Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="adc_FinanceLeaseRightOfUseAssetAmortizationAndInterestExpense_lbl" xml:lang="en-US">Finance lease right-of-use asset amortization and interest expense</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseCost" xlink:label="us-gaap_OperatingLeaseCost" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseCost" xlink:to="us-gaap_OperatingLeaseCost_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseCost_lbl" xml:lang="en-US">Operating Lease, Cost</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingLeaseCost_lbl" xml:lang="en-US">Operating lease costs</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:label="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:to="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_lbl" xml:lang="en-US">Operating Lease, Weighted Average Remaining Lease Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_lbl" xml:lang="en-US">Weighted-average remaining lease term - operating leases (years)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent" xlink:label="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent" xlink:to="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_lbl" xml:lang="en-US">Operating Lease, Weighted Average Discount Rate, Percent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_lbl" xml:lang="en-US">Weighted-average discount rate - operating leases</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseInterestPaymentOnLiability" xlink:label="us-gaap_FinanceLeaseInterestPaymentOnLiability" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseInterestPaymentOnLiability" xlink:to="us-gaap_FinanceLeaseInterestPaymentOnLiability_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FinanceLeaseInterestPaymentOnLiability_lbl" xml:lang="en-US">Finance Lease, Interest Payment on Liability</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FinanceLeaseInterestPaymentOnLiability_lbl" xml:lang="en-US">Operating cash outflows</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeasePrincipalPayments" xlink:label="us-gaap_FinanceLeasePrincipalPayments" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeasePrincipalPayments" xlink:to="us-gaap_FinanceLeasePrincipalPayments_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FinanceLeasePrincipalPayments_lbl" xml:lang="en-US">Finance Lease, Principal Payments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FinanceLeasePrincipalPayments_lbl" xml:lang="en-US">Financing cash outflows</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1" xlink:label="us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1" xlink:to="us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_lbl" xml:lang="en-US">Finance Lease, Weighted Average Remaining Lease Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_lbl" xml:lang="en-US">Weighted-average remaining lease term - finance leases (years)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent" xlink:label="us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent" xlink:to="us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_lbl" xml:lang="en-US">Finance Lease, Weighted Average Discount Rate, Percent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_lbl" xml:lang="en-US">Weighted-average discount rate - operating leases</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" xlink:label="us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" xlink:to="us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_lbl" xml:lang="en-US">Right-of-Use Asset Obtained in Exchange for Operating Lease Liability</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_lbl" xml:lang="en-US">Right-of-use assets obtained in exchange for new operating lease liabilities</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RightOfUseAssetRemovedInExchangeForRealProperty" xlink:label="adc_RightOfUseAssetRemovedInExchangeForRealProperty" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RightOfUseAssetRemovedInExchangeForRealProperty" xlink:to="adc_RightOfUseAssetRemovedInExchangeForRealProperty_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RightOfUseAssetRemovedInExchangeForRealProperty_lbl" xml:lang="en-US">Amount of decrease in right-of-use asset removed in exchange for real property.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RightOfUseAssetRemovedInExchangeForRealProperty_lbl" xml:lang="en-US">Right-of-Use Asset Removed In Exchange For Real Property</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="adc_RightOfUseAssetRemovedInExchangeForRealProperty_lbl" xml:lang="en-US">Right-of-use assets removed in exchange for real property</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RightOfUseAssetNet" xlink:label="adc_RightOfUseAssetNet" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RightOfUseAssetNet" xlink:to="adc_RightOfUseAssetNet_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RightOfUseAssetNet_lbl" xml:lang="en-US">Amount of changes in lessee's right to use underlying asset under operating lease net.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RightOfUseAssetNet_lbl" xml:lang="en-US">Right-of-Use Asset, Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_RightOfUseAssetNet_lbl" xml:lang="en-US">Right-of-use assets net change</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList" xlink:label="us-gaap_OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList" xlink:to="us-gaap_OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList_lbl" xml:lang="en-US">Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseRightOfUseAsset" xlink:to="us-gaap_OperatingLeaseRightOfUseAsset_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset_lbl" xml:lang="en-US">Operating Lease, Right-of-Use Asset</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset_lbl" xml:lang="en-US">Right of use assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList" xlink:label="us-gaap_OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList" xlink:to="us-gaap_OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList_lbl" xml:lang="en-US">Operating Lease, Liability, Statement of Financial Position [Extensible List]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OperatingLeaseLiabilityBeforeDepreciation" xlink:label="adc_OperatingLeaseLiabilityBeforeDepreciation" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OperatingLeaseLiabilityBeforeDepreciation" xlink:to="adc_OperatingLeaseLiabilityBeforeDepreciation_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OperatingLeaseLiabilityBeforeDepreciation_lbl" xml:lang="en-US">Operating Lease Liability, Before Depreciation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OperatingLeaseLiabilityBeforeDepreciation_lbl" xml:lang="en-US">Operating Lease Liability, Before Depreciation</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract" xlink:label="us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract" xlink:to="us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_lbl" xml:lang="en-US">Operating Lease Liabilities, Payments Due [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_lbl" xml:lang="en-US">Maturity Analysis of Lease Liabilities for Operating Leases</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" xml:lang="en-US">Lease payments 2022</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_lbl" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Due Year Two</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_lbl" xml:lang="en-US">Lease payments 2023</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_lbl" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Due Year Three</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_lbl" xml:lang="en-US">Lease payments 2024</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_lbl" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Due Year Four</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_lbl" xml:lang="en-US">Lease payments 2025</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_lbl" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Due Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_lbl" xml:lang="en-US">Lease Payment 2026</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_lbl" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Due after Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_lbl" xml:lang="en-US">Lease Payment Thereafter</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_lbl" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Due</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_lbl" xml:lang="en-US">Total lease payments</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountNextTwelveMonths" xlink:label="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountNextTwelveMonths" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountNextTwelveMonths" xlink:to="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountNextTwelveMonths_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountNextTwelveMonths_lbl" xml:lang="en-US">Amount of lessee's undiscounted obligation for the next fiscal year for lease payments in excess of discounted obligation for lease payments for operating lease.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountNextTwelveMonths_lbl" xml:lang="en-US">Lessee Operating Lease Liability Undiscounted Excess Amount Next Twelve Months</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountNextTwelveMonths_lbl" xml:lang="en-US">Imputed interest 2022</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearTwo" xlink:label="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearTwo" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearTwo" xlink:to="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearTwo_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearTwo_lbl" xml:lang="en-US">Amount of lessee's undiscounted obligation for the second fiscal year for lease payments in excess of discounted obligation for lease payments for operating lease.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearTwo_lbl" xml:lang="en-US">Lessee Operating Lease Liability Undiscounted Excess Amount Year Two</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearTwo_lbl" xml:lang="en-US">Imputed interest 2023</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearThree" xlink:label="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearThree" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearThree" xlink:to="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearThree_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearThree_lbl" xml:lang="en-US">Amount of lessee's undiscounted obligation for the third fiscal year for lease payments in excess of discounted obligation for lease payments for operating lease.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearThree_lbl" xml:lang="en-US">Lessee Operating Lease Liability Undiscounted Excess Amount Year Three</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearThree_lbl" xml:lang="en-US">Imputed interest 2024</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearFour" xlink:label="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearFour" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearFour" xlink:to="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearFour_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearFour_lbl" xml:lang="en-US">Amount of lessee's undiscounted obligation for the fourth fiscal year for lease payments in excess of discounted obligation for lease payments for operating lease.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearFour_lbl" xml:lang="en-US">Lessee Operating Lease Liability Undiscounted Excess Amount Year Four</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearFour_lbl" xml:lang="en-US">Imputed interest 2025</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearFive" xlink:label="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearFive" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearFive" xlink:to="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearFive_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearFive_lbl" xml:lang="en-US">Amount of lessee's undiscounted obligation for the fifth fiscal year for lease payments in excess of discounted obligation for lease payments for operating lease.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearFive_lbl" xml:lang="en-US">Lessee Operating Lease Liability Undiscounted Excess Amount Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountYearFive_lbl" xml:lang="en-US">Imputed Interest 2026</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountAfterYearFive" xlink:label="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountAfterYearFive" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountAfterYearFive" xlink:to="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountAfterYearFive_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountAfterYearFive_lbl" xml:lang="en-US">Amount of lessee's undiscounted obligation for fiscal year after fifth year for lease payments in excess of discounted obligation for lease payments for operating lease.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountAfterYearFive_lbl" xml:lang="en-US">Lessee Operating Lease Liability Undiscounted Excess Amount After Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="adc_LesseeOperatingLeaseLiabilityUndiscountedExcessAmountAfterYearFive_lbl" xml:lang="en-US">Imputed Interest Thereafter</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_lbl" xml:lang="en-US">Lessee, Operating Lease, Liability, Undiscounted Excess Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_lbl" xml:lang="en-US">Total imputed interest</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NetLesseeOperatingLeaseLiabilityPaymentsNextTwelveMonths" xlink:label="adc_NetLesseeOperatingLeaseLiabilityPaymentsNextTwelveMonths" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NetLesseeOperatingLeaseLiabilityPaymentsNextTwelveMonths" xlink:to="adc_NetLesseeOperatingLeaseLiabilityPaymentsNextTwelveMonths_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NetLesseeOperatingLeaseLiabilityPaymentsNextTwelveMonths_lbl" xml:lang="en-US">Present value of lessee's discounted obligation for the next fiscal year of lease payments from operating lease.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NetLesseeOperatingLeaseLiabilityPaymentsNextTwelveMonths_lbl" xml:lang="en-US">Net Lessee Operating Lease Liability Payments Next Twelve Months</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_NetLesseeOperatingLeaseLiabilityPaymentsNextTwelveMonths_lbl" xml:lang="en-US">Total Lease Liabilities 2022</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NetLesseeOperatingLeaseLiabilityPaymentsYearTwo" xlink:label="adc_NetLesseeOperatingLeaseLiabilityPaymentsYearTwo" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NetLesseeOperatingLeaseLiabilityPaymentsYearTwo" xlink:to="adc_NetLesseeOperatingLeaseLiabilityPaymentsYearTwo_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NetLesseeOperatingLeaseLiabilityPaymentsYearTwo_lbl" xml:lang="en-US">Present value of lessee's discounted obligation for the second fiscal year of lease payments from operating lease.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NetLesseeOperatingLeaseLiabilityPaymentsYearTwo_lbl" xml:lang="en-US">Net Lessee Operating Lease Liability Payments Year Two</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_NetLesseeOperatingLeaseLiabilityPaymentsYearTwo_lbl" xml:lang="en-US">Total Lease Liabilities 2023</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NetLesseeOperatingLeaseLiabilityPaymentsYearThree" xlink:label="adc_NetLesseeOperatingLeaseLiabilityPaymentsYearThree" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NetLesseeOperatingLeaseLiabilityPaymentsYearThree" xlink:to="adc_NetLesseeOperatingLeaseLiabilityPaymentsYearThree_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NetLesseeOperatingLeaseLiabilityPaymentsYearThree_lbl" xml:lang="en-US">Present value of lessee's discounted obligation for the third fiscal year of lease payments from operating lease.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NetLesseeOperatingLeaseLiabilityPaymentsYearThree_lbl" xml:lang="en-US">Net Lessee Operating Lease Liability Payments Year Three</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_NetLesseeOperatingLeaseLiabilityPaymentsYearThree_lbl" xml:lang="en-US">Total Lease Liabilities 2024</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NetLesseeOperatingLeaseLiabilityPaymentsYearFour" xlink:label="adc_NetLesseeOperatingLeaseLiabilityPaymentsYearFour" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NetLesseeOperatingLeaseLiabilityPaymentsYearFour" xlink:to="adc_NetLesseeOperatingLeaseLiabilityPaymentsYearFour_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NetLesseeOperatingLeaseLiabilityPaymentsYearFour_lbl" xml:lang="en-US">Present value of lessee's discounted obligation for the fourth fiscal year of lease payments from operating lease.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NetLesseeOperatingLeaseLiabilityPaymentsYearFour_lbl" xml:lang="en-US">Net Lessee Operating Lease Liability Payments Year Four</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_NetLesseeOperatingLeaseLiabilityPaymentsYearFour_lbl" xml:lang="en-US">Total Lease Liabilities 2025</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NetLesseeOperatingLeaseLiabilityPaymentsYearFive" xlink:label="adc_NetLesseeOperatingLeaseLiabilityPaymentsYearFive" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NetLesseeOperatingLeaseLiabilityPaymentsYearFive" xlink:to="adc_NetLesseeOperatingLeaseLiabilityPaymentsYearFive_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NetLesseeOperatingLeaseLiabilityPaymentsYearFive_lbl" xml:lang="en-US">Present value of lessee's discounted obligation for the fifth fiscal year of lease payments from operating lease.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NetLesseeOperatingLeaseLiabilityPaymentsYearFive_lbl" xml:lang="en-US">Net Lessee Operating Lease Liability Payments Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_NetLesseeOperatingLeaseLiabilityPaymentsYearFive_lbl" xml:lang="en-US">Total Lease Liabilities 2026</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NetLesseeOperatingLeaseLiabilityPaymentsAfterYearFive" xlink:label="adc_NetLesseeOperatingLeaseLiabilityPaymentsAfterYearFive" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NetLesseeOperatingLeaseLiabilityPaymentsAfterYearFive" xlink:to="adc_NetLesseeOperatingLeaseLiabilityPaymentsAfterYearFive_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NetLesseeOperatingLeaseLiabilityPaymentsAfterYearFive_lbl" xml:lang="en-US">Present value of lessee's discounted obligation for after the fifth fiscal year of lease payments from operating lease.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NetLesseeOperatingLeaseLiabilityPaymentsAfterYearFive_lbl" xml:lang="en-US">Net Lessee Operating Lease Liability Payments After Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_NetLesseeOperatingLeaseLiabilityPaymentsAfterYearFive_lbl" xml:lang="en-US">Total Lease Liabilities Thereafter</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract" xlink:label="us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract" xlink:to="us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_lbl" xml:lang="en-US">Finance Lease, Liability, Payment, Due [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_lbl" xml:lang="en-US">Maturity Analysis of Lease Liabilities for Finance Leases</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:to="us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" xml:lang="en-US">Finance Lease, Liability, to be Paid, Year One</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" xml:lang="en-US">Lease payments 2022</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo" xlink:to="us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_lbl" xml:lang="en-US">Finance Lease, Liability, to be Paid, Year Two</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_lbl" xml:lang="en-US">Lease payments 2023</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree" xlink:to="us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_lbl" xml:lang="en-US">Finance Lease, Liability, to be Paid, Year Three</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_lbl" xml:lang="en-US">Lease payments 2024</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour" xlink:to="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_lbl" xml:lang="en-US">Finance Lease, Liability, to be Paid, Year Four</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_lbl" xml:lang="en-US">Lease Payment 2025</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive" xlink:to="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_lbl" xml:lang="en-US">Finance Lease, Liability, to be Paid, Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_lbl" xml:lang="en-US">Lease Payment 2026</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FinanceLeaseLiabilityToBePaidYearFiveAndAfterYearFive" xlink:label="adc_FinanceLeaseLiabilityToBePaidYearFiveAndAfterYearFive" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FinanceLeaseLiabilityToBePaidYearFiveAndAfterYearFive" xlink:to="adc_FinanceLeaseLiabilityToBePaidYearFiveAndAfterYearFive_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FinanceLeaseLiabilityToBePaidYearFiveAndAfterYearFive_lbl" xml:lang="en-US">Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FinanceLeaseLiabilityToBePaidYearFiveAndAfterYearFive_lbl" xml:lang="en-US">Finance Lease, Liability, to be Paid, Year Five and After Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_FinanceLeaseLiabilityToBePaidYearFiveAndAfterYearFive_lbl" xml:lang="en-US">Thereafter</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDue" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityPaymentsDue" xlink:to="us-gaap_FinanceLeaseLiabilityPaymentsDue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDue_lbl" xml:lang="en-US">Finance Lease, Liability, Payment, Due</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDue_lbl" xml:lang="en-US">Total lease payments</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FinanceLeaseLiabilityUndiscountedExcessAmountNextTwelveMonths" xlink:label="adc_FinanceLeaseLiabilityUndiscountedExcessAmountNextTwelveMonths" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FinanceLeaseLiabilityUndiscountedExcessAmountNextTwelveMonths" xlink:to="adc_FinanceLeaseLiabilityUndiscountedExcessAmountNextTwelveMonths_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FinanceLeaseLiabilityUndiscountedExcessAmountNextTwelveMonths_lbl" xml:lang="en-US">Amount of lessee's undiscounted obligation for the next fiscal year for lease payments in excess of discounted obligation for lease payments for finance lease.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FinanceLeaseLiabilityUndiscountedExcessAmountNextTwelveMonths_lbl" xml:lang="en-US">Finance Lease Liability Undiscounted Excess Amount Next Twelve Months</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="adc_FinanceLeaseLiabilityUndiscountedExcessAmountNextTwelveMonths_lbl" xml:lang="en-US">Imputed interest 2022</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearTwo" xlink:label="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearTwo" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearTwo" xlink:to="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearTwo_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearTwo_lbl" xml:lang="en-US">Amount of lessee's undiscounted obligation for the second fiscal year for lease payments in excess of discounted obligation for lease payments for finance lease.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearTwo_lbl" xml:lang="en-US">Finance Lease Liability Undiscounted Excess Amount Year Two</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearTwo_lbl" xml:lang="en-US">Imputed interest 2023</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearThree" xlink:label="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearThree" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearThree" xlink:to="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearThree_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearThree_lbl" xml:lang="en-US">Amount of lessee's undiscounted obligation for the third fiscal year for lease payments in excess of discounted obligation for lease payments for finance lease.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearThree_lbl" xml:lang="en-US">Finance Lease Liability Undiscounted Excess Amount Year Three</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearThree_lbl" xml:lang="en-US">Imputed interest 2024</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearFour" xlink:label="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearFour" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearFour" xlink:to="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearFour_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearFour_lbl" xml:lang="en-US">Amount of lessee's undiscounted obligation for the fourth fiscal year for lease payments in excess of discounted obligation for lease payments for finance lease.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearFour_lbl" xml:lang="en-US">Finance Lease Liability Undiscounted Excess Amount Year Four</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearFour_lbl" xml:lang="en-US">Imputed interest 2025</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearFive" xlink:label="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearFive" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearFive" xlink:to="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearFive_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearFive_lbl" xml:lang="en-US">Amount of lessee's undiscounted obligation for the fifth fiscal year for lease payments in excess of discounted obligation for lease payments for finance lease.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearFive_lbl" xml:lang="en-US">Finance Lease Liability Undiscounted Excess Amount Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearFive_lbl" xml:lang="en-US">Imputed interest 2026</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearFiveAndAfterYearFive" xlink:label="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearFiveAndAfterYearFive" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearFiveAndAfterYearFive" xlink:to="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearFiveAndAfterYearFive_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearFiveAndAfterYearFive_lbl" xml:lang="en-US">Amount of lessee's undiscounted obligation for the fifth fiscal year and after fifth fiscal year for lease payments in excess of discounted obligation for lease payments for finance lease.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearFiveAndAfterYearFive_lbl" xml:lang="en-US">Finance Lease Liability Undiscounted Excess Amount Year Five And After Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="adc_FinanceLeaseLiabilityUndiscountedExcessAmountYearFiveAndAfterYearFive_lbl" xml:lang="en-US">Imputed interest Thereafter</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FinanceLeasesLiabilityUndiscountedExcessAmount" xlink:label="adc_FinanceLeasesLiabilityUndiscountedExcessAmount" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FinanceLeasesLiabilityUndiscountedExcessAmount" xlink:to="adc_FinanceLeasesLiabilityUndiscountedExcessAmount_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FinanceLeasesLiabilityUndiscountedExcessAmount_lbl" xml:lang="en-US">Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for finance lease.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FinanceLeasesLiabilityUndiscountedExcessAmount_lbl" xml:lang="en-US">Finance Leases, Liability, Undiscounted Excess Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:label="adc_FinanceLeasesLiabilityUndiscountedExcessAmount_lbl" xml:lang="en-US">Imputed interest Total</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NetFinanceLeaseLiabilityPaymentsNextTwelveMonths" xlink:label="adc_NetFinanceLeaseLiabilityPaymentsNextTwelveMonths" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NetFinanceLeaseLiabilityPaymentsNextTwelveMonths" xlink:to="adc_NetFinanceLeaseLiabilityPaymentsNextTwelveMonths_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NetFinanceLeaseLiabilityPaymentsNextTwelveMonths_lbl" xml:lang="en-US">Present value of lessee's discounted obligation for the next fiscal year of lease payments from finance lease.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NetFinanceLeaseLiabilityPaymentsNextTwelveMonths_lbl" xml:lang="en-US">Net Finance Lease Liability Payments Next Twelve Months</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_NetFinanceLeaseLiabilityPaymentsNextTwelveMonths_lbl" xml:lang="en-US">Total Lease Liabilities 2022</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NetFinanceLeaseLiabilityPaymentsYearTwo" xlink:label="adc_NetFinanceLeaseLiabilityPaymentsYearTwo" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NetFinanceLeaseLiabilityPaymentsYearTwo" xlink:to="adc_NetFinanceLeaseLiabilityPaymentsYearTwo_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NetFinanceLeaseLiabilityPaymentsYearTwo_lbl" xml:lang="en-US">Present value of lessee's discounted obligation for the second fiscal year of lease payments from finance lease.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NetFinanceLeaseLiabilityPaymentsYearTwo_lbl" xml:lang="en-US">Net Finance Lease Liability Payments Year Two</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_NetFinanceLeaseLiabilityPaymentsYearTwo_lbl" xml:lang="en-US">Total Lease Liabilities 2023</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NetFinanceLeaseLiabilityPaymentsYearThree" xlink:label="adc_NetFinanceLeaseLiabilityPaymentsYearThree" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NetFinanceLeaseLiabilityPaymentsYearThree" xlink:to="adc_NetFinanceLeaseLiabilityPaymentsYearThree_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NetFinanceLeaseLiabilityPaymentsYearThree_lbl" xml:lang="en-US">Present value of lessee's discounted obligation for the third fiscal year of lease payments from finance lease.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NetFinanceLeaseLiabilityPaymentsYearThree_lbl" xml:lang="en-US">Net Finance Lease Liability Payments Year Three</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_NetFinanceLeaseLiabilityPaymentsYearThree_lbl" xml:lang="en-US">Total Lease Liabilities 2024</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NetFinanceLeaseLiabilityPaymentsYearFour" xlink:label="adc_NetFinanceLeaseLiabilityPaymentsYearFour" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NetFinanceLeaseLiabilityPaymentsYearFour" xlink:to="adc_NetFinanceLeaseLiabilityPaymentsYearFour_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NetFinanceLeaseLiabilityPaymentsYearFour_lbl" xml:lang="en-US">Present value of lessee's discounted obligation for the fourth fiscal year of lease payments from finance lease.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NetFinanceLeaseLiabilityPaymentsYearFour_lbl" xml:lang="en-US">Net Finance Lease Liability Payments Year Four</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_NetFinanceLeaseLiabilityPaymentsYearFour_lbl" xml:lang="en-US">Total Lease Liabilities 2025</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NetFinanceLeaseLiabilityPaymentsYearFive" xlink:label="adc_NetFinanceLeaseLiabilityPaymentsYearFive" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NetFinanceLeaseLiabilityPaymentsYearFive" xlink:to="adc_NetFinanceLeaseLiabilityPaymentsYearFive_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NetFinanceLeaseLiabilityPaymentsYearFive_lbl" xml:lang="en-US">Present value of lessee's discounted obligation for the fifth fiscal year of lease payments from finance lease.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NetFinanceLeaseLiabilityPaymentsYearFive_lbl" xml:lang="en-US">Net Finance Lease Liability Payments Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_NetFinanceLeaseLiabilityPaymentsYearFive_lbl" xml:lang="en-US">Total Lease Liabilities 2026</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NetFinanceLeaseLiabilityPaymentsYearFiveAndAfterYearFive" xlink:label="adc_NetFinanceLeaseLiabilityPaymentsYearFiveAndAfterYearFive" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NetFinanceLeaseLiabilityPaymentsYearFiveAndAfterYearFive" xlink:to="adc_NetFinanceLeaseLiabilityPaymentsYearFiveAndAfterYearFive_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NetFinanceLeaseLiabilityPaymentsYearFiveAndAfterYearFive_lbl" xml:lang="en-US">Present value of lessee's discounted obligation for the fifth fiscal year and after fifth fiscal year of lease payments from finance lease.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NetFinanceLeaseLiabilityPaymentsYearFiveAndAfterYearFive_lbl" xml:lang="en-US">Net Finance Lease Liability Payments Year Five And After Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_NetFinanceLeaseLiabilityPaymentsYearFiveAndAfterYearFive_lbl" xml:lang="en-US">Total Lease Liabilities Thereafter</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiability" xlink:label="us-gaap_FinanceLeaseLiability" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiability" xlink:to="us-gaap_FinanceLeaseLiability_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FinanceLeaseLiability_lbl" xml:lang="en-US">Finance Lease, Liability</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_FinanceLeaseLiability_lbl" xml:lang="en-US">Total lease liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList" xlink:label="us-gaap_FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList" xlink:to="us-gaap_FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList_lbl" xml:lang="en-US">Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfRealEstatePropertiesTable" xlink:label="us-gaap_ScheduleOfRealEstatePropertiesTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfRealEstatePropertiesTable" xlink:to="us-gaap_ScheduleOfRealEstatePropertiesTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfRealEstatePropertiesTable_lbl" xml:lang="en-US">Schedule of Real Estate Properties [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RealEstatePropertiesLineItems" xlink:label="us-gaap_RealEstatePropertiesLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstatePropertiesLineItems" xlink:to="us-gaap_RealEstatePropertiesLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstatePropertiesLineItems_lbl" xml:lang="en-US">Real Estate Properties [Line Items]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NumberOfRealEstateProperties" xlink:label="us-gaap_NumberOfRealEstateProperties" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NumberOfRealEstateProperties" xlink:to="us-gaap_NumberOfRealEstateProperties_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NumberOfRealEstateProperties_lbl" xml:lang="en-US">Number of Real Estate Properties</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LandSubjectToGroundLeases" xlink:label="us-gaap_LandSubjectToGroundLeases" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LandSubjectToGroundLeases" xlink:to="us-gaap_LandSubjectToGroundLeases_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LandSubjectToGroundLeases_lbl" xml:lang="en-US">Land Subject to Ground Leases</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RetailNetLeaseAssetsPurchased" xlink:label="adc_RetailNetLeaseAssetsPurchased" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RetailNetLeaseAssetsPurchased" xlink:to="adc_RetailNetLeaseAssetsPurchased_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RetailNetLeaseAssetsPurchased_lbl" xml:lang="en-US">Represents number of retail net lease assets purchased by company.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RetailNetLeaseAssetsPurchased_lbl" xml:lang="en-US">Retail Net Lease Assets Purchased</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:to="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xml:lang="en-US">Payments to Acquire Property, Plant, and Equipment</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NumberOfStatesPropertiesLocated" xlink:label="adc_NumberOfStatesPropertiesLocated" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NumberOfStatesPropertiesLocated" xlink:to="adc_NumberOfStatesPropertiesLocated_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NumberOfStatesPropertiesLocated_lbl" xml:lang="en-US">Number of states in which properties of company located</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NumberOfStatesPropertiesLocated_lbl" xml:lang="en-US">Number Of States Properties Located</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife" xlink:label="us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife" xlink:to="us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_lbl" xml:lang="en-US">Acquired Finite-lived Intangible Assets, Weighted Average Useful Life</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_lbl" xml:lang="en-US">Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (in year)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsToAcquireLandHeldForUse" xlink:label="us-gaap_PaymentsToAcquireLandHeldForUse" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquireLandHeldForUse" xlink:to="us-gaap_PaymentsToAcquireLandHeldForUse_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsToAcquireLandHeldForUse_lbl" xml:lang="en-US">Payments to Acquire Land Held-for-use</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsForCapitalImprovements" xlink:label="us-gaap_PaymentsForCapitalImprovements" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsForCapitalImprovements" xlink:to="us-gaap_PaymentsForCapitalImprovements_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsForCapitalImprovements_lbl" xml:lang="en-US">Payments for Capital Improvements</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsToAcquireIntangibleAssets" xlink:label="us-gaap_PaymentsToAcquireIntangibleAssets" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquireIntangibleAssets" xlink:to="us-gaap_PaymentsToAcquireIntangibleAssets_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsToAcquireIntangibleAssets_lbl" xml:lang="en-US">Payments to Acquire Intangible Assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsToAcquireOtherProductiveAssets" xlink:label="us-gaap_PaymentsToAcquireOtherProductiveAssets" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquireOtherProductiveAssets" xlink:to="us-gaap_PaymentsToAcquireOtherProductiveAssets_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsToAcquireOtherProductiveAssets_lbl" xml:lang="en-US">Payments to Acquire Other Productive Assets</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NumberOfDevelopmentAndPartnerCapitalSolutionsProjectsCompleted" xlink:label="adc_NumberOfDevelopmentAndPartnerCapitalSolutionsProjectsCompleted" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NumberOfDevelopmentAndPartnerCapitalSolutionsProjectsCompleted" xlink:to="adc_NumberOfDevelopmentAndPartnerCapitalSolutionsProjectsCompleted_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NumberOfDevelopmentAndPartnerCapitalSolutionsProjectsCompleted_lbl" xml:lang="en-US">The number of Development And Partner Capital Solutions Projects completed during reporting period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NumberOfDevelopmentAndPartnerCapitalSolutionsProjectsCompleted_lbl" xml:lang="en-US">Number Of Development And Partner Capital Solutions Projects Completed</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NumberOfDevelopmentAndPartnerCapitalSolutionsProjectsConstruction" xlink:label="adc_NumberOfDevelopmentAndPartnerCapitalSolutionsProjectsConstruction" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NumberOfDevelopmentAndPartnerCapitalSolutionsProjectsConstruction" xlink:to="adc_NumberOfDevelopmentAndPartnerCapitalSolutionsProjectsConstruction_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NumberOfDevelopmentAndPartnerCapitalSolutionsProjectsConstruction_lbl" xml:lang="en-US">The number of Development and Partner Capital Solutions projects being constructed or beginning construction.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NumberOfDevelopmentAndPartnerCapitalSolutionsProjectsConstruction_lbl" xml:lang="en-US">Number of Development and Partner Capital Solutions Projects Construction</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_NumberOfDevelopmentAndPartnerCapitalSolutionsProjectsConstruction_lbl" xml:lang="en-US">Number of Development and Partner Capital Solutions Projects Construction</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromSaleOfRealEstate" xlink:label="us-gaap_ProceedsFromSaleOfRealEstate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromSaleOfRealEstate" xlink:to="us-gaap_ProceedsFromSaleOfRealEstate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromSaleOfRealEstate_lbl" xml:lang="en-US">Proceeds from Sale of Real Estate</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GainsLossesOnSalesOfInvestmentRealEstate" xlink:label="us-gaap_GainsLossesOnSalesOfInvestmentRealEstate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainsLossesOnSalesOfInvestmentRealEstate" xlink:to="us-gaap_GainsLossesOnSalesOfInvestmentRealEstate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GainsLossesOnSalesOfInvestmentRealEstate_lbl" xml:lang="en-US">Gains on Sales of Investment Real Estate</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ImpairedRealEstateEstateFairValue" xlink:label="adc_ImpairedRealEstateEstateFairValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ImpairedRealEstateEstateFairValue" xlink:to="adc_ImpairedRealEstateEstateFairValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ImpairedRealEstateEstateFairValue_lbl" xml:lang="en-US">The amount of fair value of the impaired real estate assets.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ImpairedRealEstateEstateFairValue_lbl" xml:lang="en-US">Impaired Real Estate Estate, Fair Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_ImpairedRealEstateEstateFairValue_lbl" xml:lang="en-US">Impaired Real Estate Estate Fair Value</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NoteAndMortgagesPayableTable" xlink:label="adc_NoteAndMortgagesPayableTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NoteAndMortgagesPayableTable" xlink:to="adc_NoteAndMortgagesPayableTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NoteAndMortgagesPayableTable_lbl" xml:lang="en-US">Note And Mortgages Payable [Table]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SeniorUnsecuredDebtMember" xlink:label="adc_SeniorUnsecuredDebtMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SeniorUnsecuredDebtMember" xlink:to="adc_SeniorUnsecuredDebtMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SeniorUnsecuredDebtMember_lbl" xml:lang="en-US">Senior Unsecured Debt [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SeniorUnsecuredDebtMember_lbl" xml:lang="en-US">Senior Unsecured Debt [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="us-gaap_DebtInstrumentAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentAxis" xlink:to="us-gaap_DebtInstrumentAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xml:lang="en-US">Debt Instrument [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="us-gaap_DebtInstrumentNameDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="us-gaap_DebtInstrumentNameDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentNameDomain_lbl" xml:lang="en-US">Debt Instrument, Name [Domain]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SeniorUnsecuredNote2025And2027Member" xlink:label="adc_SeniorUnsecuredNote2025And2027Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SeniorUnsecuredNote2025And2027Member" xlink:to="adc_SeniorUnsecuredNote2025And2027Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SeniorUnsecuredNote2025And2027Member_lbl" xml:lang="en-US">Senior Unsecured Note 2025 and 2027 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SeniorUnsecuredNote2025And2027Member_lbl" xml:lang="en-US">Senior Unsecured Note 2025 and 2027 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SeniorUnsecuredNote2025Member" xlink:label="adc_SeniorUnsecuredNote2025Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SeniorUnsecuredNote2025Member" xlink:to="adc_SeniorUnsecuredNote2025Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SeniorUnsecuredNote2025Member_lbl" xml:lang="en-US">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SeniorUnsecuredNote2025Member_lbl" xml:lang="en-US">2025 Senior Unsecured Notes [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SeniorUnsecuredNote2027Member" xlink:label="adc_SeniorUnsecuredNote2027Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SeniorUnsecuredNote2027Member" xlink:to="adc_SeniorUnsecuredNote2027Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SeniorUnsecuredNote2027Member_lbl" xml:lang="en-US">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SeniorUnsecuredNote2027Member_lbl" xml:lang="en-US">2027 Senior Unsecured Notes [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SeniorUnsecuredNote2028Member" xlink:label="adc_SeniorUnsecuredNote2028Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SeniorUnsecuredNote2028Member" xlink:to="adc_SeniorUnsecuredNote2028Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SeniorUnsecuredNote2028Member_lbl" xml:lang="en-US">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SeniorUnsecuredNote2028Member_lbl" xml:lang="en-US">2028 Senior Unsecured Notes [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SeniorUnsecuredNote2029Member" xlink:label="adc_SeniorUnsecuredNote2029Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SeniorUnsecuredNote2029Member" xlink:to="adc_SeniorUnsecuredNote2029Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SeniorUnsecuredNote2029Member_lbl" xml:lang="en-US">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SeniorUnsecuredNote2029Member_lbl" xml:lang="en-US">2029 Senior Unsecured Notes [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SeniorUnsecuredNote2030Member" xlink:label="adc_SeniorUnsecuredNote2030Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SeniorUnsecuredNote2030Member" xlink:to="adc_SeniorUnsecuredNote2030Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SeniorUnsecuredNote2030Member_lbl" xml:lang="en-US">Senior Unsecured Note 2030</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SeniorUnsecuredNote2030Member_lbl" xml:lang="en-US">2030 Senior Unsecured Notes [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SeniorUnsecuredPublicNote2030Member" xlink:label="adc_SeniorUnsecuredPublicNote2030Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SeniorUnsecuredPublicNote2030Member" xlink:to="adc_SeniorUnsecuredPublicNote2030Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SeniorUnsecuredPublicNote2030Member_lbl" xml:lang="en-US">Represents the information pertaining to Senior Unsecured Public Note 2030.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SeniorUnsecuredPublicNote2030Member_lbl" xml:lang="en-US">2030 Senior Unsecured Public Notes [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SeniorUnsecuredNote2031Member" xlink:label="adc_SeniorUnsecuredNote2031Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SeniorUnsecuredNote2031Member" xlink:to="adc_SeniorUnsecuredNote2031Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SeniorUnsecuredNote2031Member_lbl" xml:lang="en-US">Senior Unsecured Note 2031</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SeniorUnsecuredNote2031Member_lbl" xml:lang="en-US">2031 Senior Unsecured Notes [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SeniorUnsecuredPublicNotes2033Member" xlink:label="adc_SeniorUnsecuredPublicNotes2033Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SeniorUnsecuredPublicNotes2033Member" xlink:to="adc_SeniorUnsecuredPublicNotes2033Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SeniorUnsecuredPublicNotes2033Member_lbl" xml:lang="en-US">2033 Senior Unsecured Public Notes.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SeniorUnsecuredPublicNotes2033Member_lbl" xml:lang="en-US">2033 Senior Unsecured Public Notes [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TermLoan2023Member" xlink:label="adc_TermLoan2023Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TermLoan2023Member" xlink:to="adc_TermLoan2023Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TermLoan2023Member_lbl" xml:lang="en-US">Represents the information pertaining to Term Loan 2023.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TermLoan2023Member_lbl" xml:lang="en-US">2023 Term Loan [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TermLoan2024Member" xlink:label="adc_TermLoan2024Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TermLoan2024Member" xlink:to="adc_TermLoan2024Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TermLoan2024Member_lbl" xml:lang="en-US">Represents the information pertaining to Term Loan 2024.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TermLoan2024Member_lbl" xml:lang="en-US">2024 Term Loan Facilities[Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TwoThousandTwentyFourTermLoanFacilityOneMember" xlink:label="adc_TwoThousandTwentyFourTermLoanFacilityOneMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TwoThousandTwentyFourTermLoanFacilityOneMember" xlink:to="adc_TwoThousandTwentyFourTermLoanFacilityOneMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TwoThousandTwentyFourTermLoanFacilityOneMember_lbl" xml:lang="en-US">2024 Term Loan Facility One [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TwoThousandTwentyFourTermLoanFacilityTwoMember" xlink:label="adc_TwoThousandTwentyFourTermLoanFacilityTwoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TwoThousandTwentyFourTermLoanFacilityTwoMember" xlink:to="adc_TwoThousandTwentyFourTermLoanFacilityTwoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TwoThousandTwentyFourTermLoanFacilityTwoMember_lbl" xml:lang="en-US">2024 Term Loan Facility Two [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TermLoan2026Member" xlink:label="adc_TermLoan2026Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TermLoan2026Member" xlink:to="adc_TermLoan2026Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TermLoan2026Member_lbl" xml:lang="en-US">Represents the information pertaining to Term Loan 2026.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TermLoan2026Member_lbl" xml:lang="en-US">2026 Term Loan [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:label="us-gaap_CreditFacilityAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CreditFacilityAxis" xlink:to="us-gaap_CreditFacilityAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CreditFacilityAxis_lbl" xml:lang="en-US">Credit Facility [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:label="us-gaap_CreditFacilityDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CreditFacilityDomain" xlink:to="us-gaap_CreditFacilityDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CreditFacilityDomain_lbl" xml:lang="en-US">Credit Facility [Domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevolvingCreditFacilityMember" xlink:label="us-gaap_RevolvingCreditFacilityMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevolvingCreditFacilityMember" xlink:to="us-gaap_RevolvingCreditFacilityMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RevolvingCreditFacilityMember_lbl" xml:lang="en-US">Revolving Credit Facility [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="us-gaap_DerivativeInstrumentRiskAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeInstrumentRiskAxis" xlink:to="us-gaap_DerivativeInstrumentRiskAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeInstrumentRiskAxis_lbl" xml:lang="en-US">Derivative Instrument [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="us-gaap_DerivativeContractTypeDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeContractTypeDomain" xlink:to="us-gaap_DerivativeContractTypeDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeContractTypeDomain_lbl" xml:lang="en-US">Derivative Contract [Domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestRateSwapMember" xlink:label="us-gaap_InterestRateSwapMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestRateSwapMember" xlink:to="us-gaap_InterestRateSwapMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestRateSwapMember_lbl" xml:lang="en-US">Interest rate swap</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BlendedAllInIncludingInterestRateSwapMember" xlink:label="adc_BlendedAllInIncludingInterestRateSwapMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BlendedAllInIncludingInterestRateSwapMember" xlink:to="adc_BlendedAllInIncludingInterestRateSwapMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BlendedAllInIncludingInterestRateSwapMember_lbl" xml:lang="en-US">Blended All-In Including Interest Rate Swap [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BlendedAllInIncludingInterestRateSwapMember_lbl" xml:lang="en-US">Blended All-In Including Interest Rate Swap [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_VariableRateAxis" xlink:label="us-gaap_VariableRateAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_VariableRateAxis" xlink:to="us-gaap_VariableRateAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_VariableRateAxis_lbl" xml:lang="en-US">Variable Rate [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_VariableRateDomain" xlink:label="us-gaap_VariableRateDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_VariableRateDomain" xlink:to="us-gaap_VariableRateDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_VariableRateDomain_lbl" xml:lang="en-US">Variable Rate [Domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LondonInterbankOfferedRateLIBORMember" xlink:label="us-gaap_LondonInterbankOfferedRateLIBORMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LondonInterbankOfferedRateLIBORMember" xlink:to="us-gaap_LondonInterbankOfferedRateLIBORMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LondonInterbankOfferedRateLIBORMember_lbl" xml:lang="en-US">LIBOR [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="us-gaap_DebtInstrumentLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_DebtInstrumentLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xml:lang="en-US">Debt Instrument [Line Items]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebt" xlink:label="us-gaap_LongTermDebt" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebt" xlink:to="us-gaap_LongTermDebt_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebt_lbl" xml:lang="en-US">Long-term Debt, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LongTermDebt_lbl" xml:lang="en-US">Total</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount" xlink:label="us-gaap_DebtInstrumentCarryingAmount" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentCarryingAmount" xlink:to="us-gaap_DebtInstrumentCarryingAmount_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentCarryingAmount_lbl" xml:lang="en-US">Long-term Debt, Gross</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentCarryingAmount_lbl" xml:lang="en-US">Total Principal</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_DebtInstrumentCarryingAmount_lbl" xml:lang="en-US">Total scheduled principal payments</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentCollateralAmount" xlink:label="us-gaap_DebtInstrumentCollateralAmount" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentCollateralAmount" xlink:to="us-gaap_DebtInstrumentCollateralAmount_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentCollateralAmount_lbl" xml:lang="en-US">Debt Instrument, Collateral Amount</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtWeightedAverageInterestRate" xlink:label="us-gaap_LongtermDebtWeightedAverageInterestRate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongtermDebtWeightedAverageInterestRate" xlink:to="us-gaap_LongtermDebtWeightedAverageInterestRate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongtermDebtWeightedAverageInterestRate_lbl" xml:lang="en-US">Long-term Debt, Weighted Average Interest Rate</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:to="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xml:lang="en-US">Debt Instrument, Interest Rate, Stated Percentage</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:to="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xml:lang="en-US">Debt Instrument, Basis Spread on Variable Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xml:lang="en-US">Spread on variable rate</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DerivativeNotionalAmountTerminated" xlink:label="adc_DerivativeNotionalAmountTerminated" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DerivativeNotionalAmountTerminated" xlink:to="adc_DerivativeNotionalAmountTerminated_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DerivativeNotionalAmountTerminated_lbl" xml:lang="en-US">Nominal or face amount of derivative terminated.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DerivativeNotionalAmountTerminated_lbl" xml:lang="en-US">Derivative Notional Amount, Terminated</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ProceedsFromTerminationOfInterestRateSwapAgreementsRelatedToDebt" xlink:label="adc_ProceedsFromTerminationOfInterestRateSwapAgreementsRelatedToDebt" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ProceedsFromTerminationOfInterestRateSwapAgreementsRelatedToDebt" xlink:to="adc_ProceedsFromTerminationOfInterestRateSwapAgreementsRelatedToDebt_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ProceedsFromTerminationOfInterestRateSwapAgreementsRelatedToDebt_lbl" xml:lang="en-US">The cash inflow from termination of interest rate swap agreements related to debt instrument.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ProceedsFromTerminationOfInterestRateSwapAgreementsRelatedToDebt_lbl" xml:lang="en-US">Proceeds From Termination Of Interest Rate Swap Agreements Related To Debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_ProceedsFromTerminationOfInterestRateSwapAgreementsRelatedToDebt_lbl" xml:lang="en-US">Proceeds From Termination</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SwapTerminationCosts" xlink:label="adc_SwapTerminationCosts" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SwapTerminationCosts" xlink:to="adc_SwapTerminationCosts_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SwapTerminationCosts_lbl" xml:lang="en-US">The amount of cost incurred on termination of interest rate swaps.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SwapTerminationCosts_lbl" xml:lang="en-US">Swap Termination Costs</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentInterestRateEffectivePercentage" xlink:to="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" xml:lang="en-US">Debt Instrument, Interest Rate, Effective Percentage</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="us-gaap_DebtInstrumentFaceAmount" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentFaceAmount" xlink:to="us-gaap_DebtInstrumentFaceAmount_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xml:lang="en-US">Debt Instrument, Face Amount</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DebtInstrumentAccordionOptionAdditionalLenderCommitmentsMaximum" xlink:label="adc_DebtInstrumentAccordionOptionAdditionalLenderCommitmentsMaximum" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DebtInstrumentAccordionOptionAdditionalLenderCommitmentsMaximum" xlink:to="adc_DebtInstrumentAccordionOptionAdditionalLenderCommitmentsMaximum_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DebtInstrumentAccordionOptionAdditionalLenderCommitmentsMaximum_lbl" xml:lang="en-US">Face (par) amount of debt instrument at time of issuance with accordion option maximum additional lender commitments.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DebtInstrumentAccordionOptionAdditionalLenderCommitmentsMaximum_lbl" xml:lang="en-US">Debt Instrument, Accordion Option Additional Lender Commitments, Maximum</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ReimbursementAgreementAmount" xlink:label="adc_ReimbursementAgreementAmount" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ReimbursementAgreementAmount" xlink:to="adc_ReimbursementAgreementAmount_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ReimbursementAgreementAmount_lbl" xml:lang="en-US">The loss amount to be reimbursed per a contract</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ReimbursementAgreementAmount_lbl" xml:lang="en-US">Reimbursement Agreement, Amount</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NotesPayableDueJanuary20233.60PercentMember" xlink:label="adc_NotesPayableDueJanuary20233.60PercentMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NotesPayableDueJanuary20233.60PercentMember" xlink:to="adc_NotesPayableDueJanuary20233.60PercentMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NotesPayableDueJanuary20233.60PercentMember_lbl" xml:lang="en-US">Notes Payable Due January 2023 3.60 Percent [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NotesPayableDueJanuary20233.60PercentMember_lbl" xml:lang="en-US">Notes Payable Due January 2023 3.60 Percent [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NotesPayableDueSeptember20235.01PercentMember" xlink:label="adc_NotesPayableDueSeptember20235.01PercentMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NotesPayableDueSeptember20235.01PercentMember" xlink:to="adc_NotesPayableDueSeptember20235.01PercentMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NotesPayableDueSeptember20235.01PercentMember_lbl" xml:lang="en-US">Notes Payable Due September 2023 5.01 Percent [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NotesPayableDueSeptember20235.01PercentMember_lbl" xml:lang="en-US">Notes Payable Due September 2023 5.01 Percent [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NotesPayableDueJuly20266.27PercentMember" xlink:label="adc_NotesPayableDueJuly20266.27PercentMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NotesPayableDueJuly20266.27PercentMember" xlink:to="adc_NotesPayableDueJuly20266.27PercentMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NotesPayableDueJuly20266.27PercentMember_lbl" xml:lang="en-US">Notes Payable Due July 2026 6.27 Percent [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NotesPayableDueJuly20266.27PercentMember_lbl" xml:lang="en-US">Notes Payable Due July 2026 6.27 Percent [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredFinanceCostsNet" xlink:label="us-gaap_DeferredFinanceCostsNet" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredFinanceCostsNet" xlink:to="us-gaap_DeferredFinanceCostsNet_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xml:lang="en-US">Deferred Finance Costs, Net, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xml:lang="en-US">Unamortized debt issuance costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xml:lang="en-US">Unamortized debt issuance costs</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentPeriodicPaymentPrincipal" xlink:label="us-gaap_DebtInstrumentPeriodicPaymentPrincipal" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentPeriodicPaymentPrincipal" xlink:to="us-gaap_DebtInstrumentPeriodicPaymentPrincipal_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentPeriodicPaymentPrincipal_lbl" xml:lang="en-US">Debt Instrument, Periodic Payment, Principal</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SeniorUnsecuredPublicNotes2028Member" xlink:label="adc_SeniorUnsecuredPublicNotes2028Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SeniorUnsecuredPublicNotes2028Member" xlink:to="adc_SeniorUnsecuredPublicNotes2028Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SeniorUnsecuredPublicNotes2028Member_lbl" xml:lang="en-US">2028 Senior Unsecured Public Notes.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SeniorUnsecuredPublicNotes2028Member_lbl" xml:lang="en-US">2028 Senior Unsecured Public Notes [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet" xlink:to="us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_lbl" xml:lang="en-US">Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_lbl" xml:lang="en-US">Unamortized debt issuance costs and original issue discount</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LongTermDebtMaturitiesRepaymentsOfPrincipalTable" xlink:label="adc_LongTermDebtMaturitiesRepaymentsOfPrincipalTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LongTermDebtMaturitiesRepaymentsOfPrincipalTable" xlink:to="adc_LongTermDebtMaturitiesRepaymentsOfPrincipalTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LongTermDebtMaturitiesRepaymentsOfPrincipalTable_lbl" xml:lang="en-US">n/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LongTermDebtMaturitiesRepaymentsOfPrincipalTable_lbl" xml:lang="en-US">Long Term Debt Maturities Repayments Of Principal [Table]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DebtInstrumentDebtRepaymentsAxis" xlink:label="adc_DebtInstrumentDebtRepaymentsAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DebtInstrumentDebtRepaymentsAxis" xlink:to="adc_DebtInstrumentDebtRepaymentsAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DebtInstrumentDebtRepaymentsAxis_lbl" xml:lang="en-US">Debt Instrument, Debt Repayments [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DebtInstrumentDebtRepaymentsAxis_lbl" xml:lang="en-US">Debt Instrument, Debt Repayments [Axis]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DebtInstrumentDebtRepaymentsDomain" xlink:label="adc_DebtInstrumentDebtRepaymentsDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DebtInstrumentDebtRepaymentsDomain" xlink:to="adc_DebtInstrumentDebtRepaymentsDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DebtInstrumentDebtRepaymentsDomain_lbl" xml:lang="en-US">Debt Instrument, Debt Repayments [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DebtInstrumentDebtRepaymentsDomain_lbl" xml:lang="en-US">Debt Instrument, Debt Repayments [Domain]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DebtInstrumentScheduledPrincipalMember" xlink:label="adc_DebtInstrumentScheduledPrincipalMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DebtInstrumentScheduledPrincipalMember" xlink:to="adc_DebtInstrumentScheduledPrincipalMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DebtInstrumentScheduledPrincipalMember_lbl" xml:lang="en-US">Scheduled Principal [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DebtInstrumentBalloonPaymentMember" xlink:label="adc_DebtInstrumentBalloonPaymentMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DebtInstrumentBalloonPaymentMember" xlink:to="adc_DebtInstrumentBalloonPaymentMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DebtInstrumentBalloonPaymentMember_lbl" xml:lang="en-US">Debt Instrument Balloon Payment [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DebtInstrumentBalloonPaymentMember_lbl" xml:lang="en-US">Debt Instrument Balloon Payment [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LongTermDebtMaturitiesRepaymentsOfPrincipalLineItems" xlink:label="adc_LongTermDebtMaturitiesRepaymentsOfPrincipalLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LongTermDebtMaturitiesRepaymentsOfPrincipalLineItems" xlink:to="adc_LongTermDebtMaturitiesRepaymentsOfPrincipalLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LongTermDebtMaturitiesRepaymentsOfPrincipalLineItems_lbl" xml:lang="en-US">Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LongTermDebtMaturitiesRepaymentsOfPrincipalLineItems_lbl" xml:lang="en-US">Long Term Debt Maturities Repayments Of Principal Line Items</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_lbl" xml:lang="en-US">Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_lbl" xml:lang="en-US">2022</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_lbl" xml:lang="en-US">Long-term Debt, Maturities, Repayments of Principal in Year Two</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_lbl" xml:lang="en-US">2023</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_lbl" xml:lang="en-US">Long-term Debt, Maturities, Repayments of Principal in Year Three</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_lbl" xml:lang="en-US">2024</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_lbl" xml:lang="en-US">Long-term Debt, Maturities, Repayments of Principal in Year Four</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_lbl" xml:lang="en-US">2025</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_lbl" xml:lang="en-US">Long-term Debt, Maturities, Repayments of Principal in Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_lbl" xml:lang="en-US">2026</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_lbl" xml:lang="en-US">Long-term Debt, Maturities, Repayments of Principal after Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_lbl" xml:lang="en-US">Thereafter</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscount" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscount" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentUnamortizedDiscount" xlink:to="us-gaap_DebtInstrumentUnamortizedDiscount_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscount_lbl" xml:lang="en-US">Debt Instrument, Unamortized Discount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscount_lbl" xml:lang="en-US">Original issue discount</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfStockByClassTable" xlink:label="us-gaap_ScheduleOfStockByClassTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfStockByClassTable" xlink:to="us-gaap_ScheduleOfStockByClassTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfStockByClassTable_lbl" xml:lang="en-US">Schedule of Stock by Class [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsidiarySaleOfStockAxis" xlink:label="us-gaap_SubsidiarySaleOfStockAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsidiarySaleOfStockAxis" xlink:to="us-gaap_SubsidiarySaleOfStockAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsidiarySaleOfStockAxis_lbl" xml:lang="en-US">Sale of Stock [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SaleOfStockNameOfTransactionDomain" xlink:label="us-gaap_SaleOfStockNameOfTransactionDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SaleOfStockNameOfTransactionDomain" xlink:to="us-gaap_SaleOfStockNameOfTransactionDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SaleOfStockNameOfTransactionDomain_lbl" xml:lang="en-US">Sale of Stock [Domain]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AtMarketEquityProgramMember" xlink:label="adc_AtMarketEquityProgramMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AtMarketEquityProgramMember" xlink:to="adc_AtMarketEquityProgramMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AtMarketEquityProgramMember_lbl" xml:lang="en-US">At-Market Equity Program [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AtMarketEquityProgramMember_lbl" xml:lang="en-US">At-Market Equity Program [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AtMarketEquityProgramTwoMember" xlink:label="adc_AtMarketEquityProgramTwoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AtMarketEquityProgramTwoMember" xlink:to="adc_AtMarketEquityProgramTwoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AtMarketEquityProgramTwoMember_lbl" xml:lang="en-US">At-Market Equity Program Two [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AtMarketEquityProgramTwoMember_lbl" xml:lang="en-US">At-Market Equity Program Two [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AtMarketEquityProgramThreeMember" xlink:label="adc_AtMarketEquityProgramThreeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AtMarketEquityProgramThreeMember" xlink:to="adc_AtMarketEquityProgramThreeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AtMarketEquityProgramThreeMember_lbl" xml:lang="en-US">At-Market Equity Program Three [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AtMarketEquityProgramThreeMember_lbl" xml:lang="en-US">At-Market Equity Program Three [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OverAllotmentOptionMember" xlink:label="us-gaap_OverAllotmentOptionMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OverAllotmentOptionMember" xlink:to="us-gaap_OverAllotmentOptionMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OverAllotmentOptionMember_lbl" xml:lang="en-US">Over-Allotment Option [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="us-gaap_FinancialInstrumentAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinancialInstrumentAxis" xlink:to="us-gaap_FinancialInstrumentAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FinancialInstrumentAxis_lbl" xml:lang="en-US">Financial Instrument [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:to="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_lbl" xml:lang="en-US">Financial Instruments [Domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_StatementScenarioAxis" xlink:label="srt_StatementScenarioAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_StatementScenarioAxis" xlink:to="srt_StatementScenarioAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_StatementScenarioAxis_lbl" xml:lang="en-US">Scenario [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="srt_ScenarioUnspecifiedDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_ScenarioUnspecifiedDomain" xlink:to="srt_ScenarioUnspecifiedDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_ScenarioUnspecifiedDomain_lbl" xml:lang="en-US">Scenario, Unspecified [Domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScenarioPlanMember" xlink:label="us-gaap_ScenarioPlanMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScenarioPlanMember" xlink:to="us-gaap_ScenarioPlanMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScenarioPlanMember_lbl" xml:lang="en-US">Scenario, Plan [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ClassOfStockLineItems" xlink:label="us-gaap_ClassOfStockLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfStockLineItems" xlink:to="us-gaap_ClassOfStockLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfStockLineItems_lbl" xml:lang="en-US">Class of Stock [Line Items]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ForwardContractIndexedToIssuersEquityShares" xlink:label="us-gaap_ForwardContractIndexedToIssuersEquityShares" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ForwardContractIndexedToIssuersEquityShares" xlink:to="us-gaap_ForwardContractIndexedToIssuersEquityShares_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ForwardContractIndexedToIssuersEquityShares_lbl" xml:lang="en-US">Forward Contract Indexed to Issuer's Equity, Shares</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ForwardContractIndexedToIssuerSEquityRemainingAmount" xlink:label="adc_ForwardContractIndexedToIssuerSEquityRemainingAmount" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ForwardContractIndexedToIssuerSEquityRemainingAmount" xlink:to="adc_ForwardContractIndexedToIssuerSEquityRemainingAmount_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ForwardContractIndexedToIssuerSEquityRemainingAmount_lbl" xml:lang="en-US">Remaining amount available under ATM program.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ForwardContractIndexedToIssuerSEquityRemainingAmount_lbl" xml:lang="en-US">Forward Contract Indexed to Issuer's Equity, Remaining amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_ForwardContractIndexedToIssuerSEquityRemainingAmount_lbl" xml:lang="en-US">Amount available under ATM program</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ValueOfEquityInstrumentsToBeIssued" xlink:label="adc_ValueOfEquityInstrumentsToBeIssued" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ValueOfEquityInstrumentsToBeIssued" xlink:to="adc_ValueOfEquityInstrumentsToBeIssued_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ValueOfEquityInstrumentsToBeIssued_lbl" xml:lang="en-US">Total amount which can be issued under the ATM program.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ValueOfEquityInstrumentsToBeIssued_lbl" xml:lang="en-US">Value Of Equity Instruments To Be Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_ValueOfEquityInstrumentsToBeIssued_lbl" xml:lang="en-US">Size</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquityNoteStockSplitConversionRatio1" xlink:label="us-gaap_StockholdersEquityNoteStockSplitConversionRatio1" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityNoteStockSplitConversionRatio1" xlink:to="us-gaap_StockholdersEquityNoteStockSplitConversionRatio1_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquityNoteStockSplitConversionRatio1_lbl" xml:lang="en-US">Stockholders' Equity Note, Stock Split, Conversion Ratio</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PreferredStockDividendRatePercentage" xlink:label="us-gaap_PreferredStockDividendRatePercentage" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockDividendRatePercentage" xlink:to="us-gaap_PreferredStockDividendRatePercentage_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockDividendRatePercentage_lbl" xml:lang="en-US">Preferred Stock, Dividend Rate, Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockDividendRatePercentage_lbl" xml:lang="en-US">Preferred stock, dividend rate, percentage</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PreferredStockLiquidationPreference" xlink:label="us-gaap_PreferredStockLiquidationPreference" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockLiquidationPreference" xlink:to="us-gaap_PreferredStockLiquidationPreference_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockLiquidationPreference_lbl" xml:lang="en-US">Preferred Stock, Liquidation Preference Per Share</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PreferredStockRedemptionPricePerShare" xlink:label="us-gaap_PreferredStockRedemptionPricePerShare" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockRedemptionPricePerShare" xlink:to="us-gaap_PreferredStockRedemptionPricePerShare_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockRedemptionPricePerShare_lbl" xml:lang="en-US">Preferred Stock, Redemption Price Per Share</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PreferredStockDividendsPerShareToBeDeclaredPerMonth" xlink:label="adc_PreferredStockDividendsPerShareToBeDeclaredPerMonth" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PreferredStockDividendsPerShareToBeDeclaredPerMonth" xlink:to="adc_PreferredStockDividendsPerShareToBeDeclaredPerMonth_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PreferredStockDividendsPerShareToBeDeclaredPerMonth_lbl" xml:lang="en-US">Dividends to be declared per month for each share of preferred stock outstanding.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PreferredStockDividendsPerShareToBeDeclaredPerMonth_lbl" xml:lang="en-US">Preferred Stock, Dividends Per Share, To Be Declared Per Month</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_PreferredStockDividendsPerShareToBeDeclaredPerMonth_lbl" xml:lang="en-US">Preferred stock, dividends to be declared monthly (in dollars per share)</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PreferredStockDividendsPerShareDeclaredPerAnnum" xlink:label="adc_PreferredStockDividendsPerShareDeclaredPerAnnum" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PreferredStockDividendsPerShareDeclaredPerAnnum" xlink:to="adc_PreferredStockDividendsPerShareDeclaredPerAnnum_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PreferredStockDividendsPerShareDeclaredPerAnnum_lbl" xml:lang="en-US">Aggregate dividends declared per annum for each share of preferred stock outstanding.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PreferredStockDividendsPerShareDeclaredPerAnnum_lbl" xml:lang="en-US">Preferred Stock, Dividends Per Share, Declared Per Annum</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_PreferredStockDividendsPerShareDeclaredPerAnnum_lbl" xml:lang="en-US">Preferred stock, dividends declared per annum (in dollars per share)</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DividendsAndDistributionPayableTable" xlink:label="adc_DividendsAndDistributionPayableTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DividendsAndDistributionPayableTable" xlink:to="adc_DividendsAndDistributionPayableTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DividendsAndDistributionPayableTable_lbl" xml:lang="en-US">Dividends And Distribution Payable [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_LegalEntityAxis" xlink:to="dei_LegalEntityAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_LegalEntityAxis_lbl" xml:lang="en-US">Legal Entity [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityDomain" xlink:to="dei_EntityDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityDomain_lbl" xml:lang="en-US">Entity [Domain]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AgreeLimitedPartnershipMember" xlink:label="adc_AgreeLimitedPartnershipMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AgreeLimitedPartnershipMember" xlink:to="adc_AgreeLimitedPartnershipMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AgreeLimitedPartnershipMember_lbl" xml:lang="en-US">Agree Limited Partnership [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DividendsPayableLineItems" xlink:label="us-gaap_DividendsPayableLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsPayableLineItems" xlink:to="us-gaap_DividendsPayableLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendsPayableLineItems_lbl" xml:lang="en-US">Dividends Payable [Line Items]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DividendsPayableTable" xlink:label="us-gaap_DividendsPayableTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsPayableTable" xlink:to="us-gaap_DividendsPayableTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendsPayableTable_lbl" xml:lang="en-US">Dividends Payable [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DividendsAxis" xlink:label="us-gaap_DividendsAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsAxis" xlink:to="us-gaap_DividendsAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendsAxis_lbl" xml:lang="en-US">Dividends [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DividendsDomain" xlink:label="us-gaap_DividendsDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsDomain" xlink:to="us-gaap_DividendsDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendsDomain_lbl" xml:lang="en-US">Dividends [Domain]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DividendDeclaredOrdinaryIncomeMember" xlink:label="adc_DividendDeclaredOrdinaryIncomeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DividendDeclaredOrdinaryIncomeMember" xlink:to="adc_DividendDeclaredOrdinaryIncomeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DividendDeclaredOrdinaryIncomeMember_lbl" xml:lang="en-US">Dividend Declared, Ordinary Income [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DividendDeclaredReturnOfCapitalMember" xlink:label="adc_DividendDeclaredReturnOfCapitalMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DividendDeclaredReturnOfCapitalMember" xlink:to="adc_DividendDeclaredReturnOfCapitalMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DividendDeclaredReturnOfCapitalMember_lbl" xml:lang="en-US">Dividend Declared, Return of Capital [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilities" xlink:label="us-gaap_DeferredIncomeTaxLiabilities" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredIncomeTaxLiabilities" xlink:to="us-gaap_DeferredIncomeTaxLiabilities_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredIncomeTaxLiabilities_lbl" xml:lang="en-US">Deferred Tax Liabilities, Gross</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DeferredIncomeTaxLiabilities_lbl" xml:lang="en-US">Deferred Income Taxes</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes" xlink:label="us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes" xlink:to="us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes_lbl" xml:lang="en-US">Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Amount</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable" xlink:to="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_lbl" xml:lang="en-US">Derivative Instruments and Hedging Activities Disclosures [Table]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_InterestRateSwapAgreementInFebruary2020Member" xlink:label="adc_InterestRateSwapAgreementInFebruary2020Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_InterestRateSwapAgreementInFebruary2020Member" xlink:to="adc_InterestRateSwapAgreementInFebruary2020Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_InterestRateSwapAgreementInFebruary2020Member_lbl" xml:lang="en-US">Interest Rate Swap Agreement, in February 2020 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_InterestRateSwapAgreementInFebruary2020Member_lbl" xml:lang="en-US">Interest Rate Swap Agreement, in February 2020 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_InterestRateSwapAgreementInAugust2020Member" xlink:label="adc_InterestRateSwapAgreementInAugust2020Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_InterestRateSwapAgreementInAugust2020Member" xlink:to="adc_InterestRateSwapAgreementInAugust2020Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_InterestRateSwapAgreementInAugust2020Member_lbl" xml:lang="en-US">Interest Rate Swap Agreement In August 2020 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_InterestRateSwapAgreementInAugust2020Member_lbl" xml:lang="en-US">Interest Rate Swap Agreement In August 2020 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_InterestRateSwapAgreementInDecember2020Member" xlink:label="adc_InterestRateSwapAgreementInDecember2020Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_InterestRateSwapAgreementInDecember2020Member" xlink:to="adc_InterestRateSwapAgreementInDecember2020Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_InterestRateSwapAgreementInDecember2020Member_lbl" xml:lang="en-US">Represent information pertaining to interest rate swap agreements in December 2020.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_InterestRateSwapAgreementInDecember2020Member_lbl" xml:lang="en-US">Interest Rate Swap Agreement In December 2020 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_InterestRateSwapAgreementInJuly2014Member" xlink:label="adc_InterestRateSwapAgreementInJuly2014Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_InterestRateSwapAgreementInJuly2014Member" xlink:to="adc_InterestRateSwapAgreementInJuly2014Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_InterestRateSwapAgreementInJuly2014Member_lbl" xml:lang="en-US">Represent information pertaining to interest rate swap agreements in July 2014.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_InterestRateSwapAgreementInJuly2014Member_lbl" xml:lang="en-US">Interest Rate Swap Agreement, in July 2014 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_InterestRateSwapAgreementInJune2016Member" xlink:label="adc_InterestRateSwapAgreementInJune2016Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_InterestRateSwapAgreementInJune2016Member" xlink:to="adc_InterestRateSwapAgreementInJune2016Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_InterestRateSwapAgreementInJune2016Member_lbl" xml:lang="en-US">Interest Rate Swap Agreement, in June 2016 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_InterestRateSwapAgreementInJune2016Member_lbl" xml:lang="en-US">Interest Rate Swap Agreement, in June 2016 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_InterestRateSwapAgreementInDecember2018Member" xlink:label="adc_InterestRateSwapAgreementInDecember2018Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_InterestRateSwapAgreementInDecember2018Member" xlink:to="adc_InterestRateSwapAgreementInDecember2018Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_InterestRateSwapAgreementInDecember2018Member_lbl" xml:lang="en-US">Represent information pertaining to interest rate swap agreements in December 2018.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_InterestRateSwapAgreementInDecember2018Member_lbl" xml:lang="en-US">Interest Rate Swap Agreement, in December 2018 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_InterestRateSwapAgreementInJune2019Member" xlink:label="adc_InterestRateSwapAgreementInJune2019Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_InterestRateSwapAgreementInJune2019Member" xlink:to="adc_InterestRateSwapAgreementInJune2019Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_InterestRateSwapAgreementInJune2019Member_lbl" xml:lang="en-US">Represent information pertaining to interest rate swap agreements in June 2019.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_InterestRateSwapAgreementInJune2019Member_lbl" xml:lang="en-US">Interest Rate Swap Agreement, in June 2019 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_InterestRateSwapAgreementSixtyFiveMillionInOctober2019Member" xlink:label="adc_InterestRateSwapAgreementSixtyFiveMillionInOctober2019Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_InterestRateSwapAgreementSixtyFiveMillionInOctober2019Member" xlink:to="adc_InterestRateSwapAgreementSixtyFiveMillionInOctober2019Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_InterestRateSwapAgreementSixtyFiveMillionInOctober2019Member_lbl" xml:lang="en-US">Represent information pertaining to interest rate swap agreements in interest rates on $65.0 million in October 2019.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_InterestRateSwapAgreementSixtyFiveMillionInOctober2019Member_lbl" xml:lang="en-US">Interest Rate Swap Agreement, Sixty-Five Million in October 2019 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_InterestRateSwapAgreementThirtyFiveMillionInOctober2019Member" xlink:label="adc_InterestRateSwapAgreementThirtyFiveMillionInOctober2019Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_InterestRateSwapAgreementThirtyFiveMillionInOctober2019Member" xlink:to="adc_InterestRateSwapAgreementThirtyFiveMillionInOctober2019Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_InterestRateSwapAgreementThirtyFiveMillionInOctober2019Member_lbl" xml:lang="en-US">Represent information pertaining to interest rate swap agreements in interest rates on $35.0 million in October 2019.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_InterestRateSwapAgreementThirtyFiveMillionInOctober2019Member_lbl" xml:lang="en-US">Interest Rate Swap Agreement, Thirty-Five Million in October 2019 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_InterestRateSwapAgreementInFebruary2021Member" xlink:label="adc_InterestRateSwapAgreementInFebruary2021Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_InterestRateSwapAgreementInFebruary2021Member" xlink:to="adc_InterestRateSwapAgreementInFebruary2021Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_InterestRateSwapAgreementInFebruary2021Member_lbl" xml:lang="en-US">Represent information pertaining to interest rate swap agreements in February 2021.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_InterestRateSwapAgreementInFebruary2021Member_lbl" xml:lang="en-US">Interest Rate Swap Agreement, in February 2021 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_InterestRateSwapAgreementInMayAndJuly2021Member" xlink:label="adc_InterestRateSwapAgreementInMayAndJuly2021Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_InterestRateSwapAgreementInMayAndJuly2021Member" xlink:to="adc_InterestRateSwapAgreementInMayAndJuly2021Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_InterestRateSwapAgreementInMayAndJuly2021Member_lbl" xml:lang="en-US">Represents the information pertaining to interest rate swap agreement in May and July 2021.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_InterestRateSwapAgreementInMayAndJuly2021Member_lbl" xml:lang="en-US">Interest Rate Swap Agreement in May and July 2021 [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems" xlink:to="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_lbl" xml:lang="en-US">Derivative Instruments and Hedging Activities Disclosures [Line Items]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeNotionalAmount" xlink:label="us-gaap_DerivativeNotionalAmount" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeNotionalAmount" xlink:to="us-gaap_DerivativeNotionalAmount_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeNotionalAmount_lbl" xml:lang="en-US">Derivative, Notional Amount</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DescriptionOfInterestRateCashFlowHedgeActivities" xlink:label="us-gaap_DescriptionOfInterestRateCashFlowHedgeActivities" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DescriptionOfInterestRateCashFlowHedgeActivities" xlink:to="us-gaap_DescriptionOfInterestRateCashFlowHedgeActivities_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DescriptionOfInterestRateCashFlowHedgeActivities_lbl" xml:lang="en-US">Description of Interest Rate Cash Flow Hedge Activities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeFixedInterestRate" xlink:label="us-gaap_DerivativeFixedInterestRate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeFixedInterestRate" xlink:to="us-gaap_DerivativeFixedInterestRate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeFixedInterestRate_lbl" xml:lang="en-US">Derivative, Fixed Interest Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DerivativeFixedInterestRate_lbl" xml:lang="en-US">Fixed interest rate</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeAmountOfHedgedItem" xlink:label="us-gaap_DerivativeAmountOfHedgedItem" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeAmountOfHedgedItem" xlink:to="us-gaap_DerivativeAmountOfHedgedItem_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeAmountOfHedgedItem_lbl" xml:lang="en-US">Derivative, Amount of Hedged Item</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeInceptionDates" xlink:label="us-gaap_DerivativeInceptionDates" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeInceptionDates" xlink:to="us-gaap_DerivativeInceptionDates_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeInceptionDates_lbl" xml:lang="en-US">Derivative, Inception Date</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeMaturityDates" xlink:label="us-gaap_DerivativeMaturityDates" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeMaturityDates" xlink:to="us-gaap_DerivativeMaturityDates_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeMaturityDates_lbl" xml:lang="en-US">Derivative, Maturity Date</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueNetAssetLiability" xlink:label="us-gaap_FairValueNetAssetLiability" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueNetAssetLiability" xlink:to="us-gaap_FairValueNetAssetLiability_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueNetAssetLiability_lbl" xml:lang="en-US">Fair Value, Net Asset (Liability)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred" xlink:label="us-gaap_DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred" xlink:to="us-gaap_DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred_lbl" xml:lang="en-US">Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent" xlink:label="us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent" xlink:to="us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent_lbl" xml:lang="en-US">Derivative Instruments, Loss Reclassified from Accumulated OCI into Income, Effective Portion</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent_lbl" xml:lang="en-US">Accelerated loss out of OCI</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeNetLiabilityPositionAggregateFairValue" xlink:label="us-gaap_DerivativeNetLiabilityPositionAggregateFairValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeNetLiabilityPositionAggregateFairValue" xlink:to="us-gaap_DerivativeNetLiabilityPositionAggregateFairValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeNetLiabilityPositionAggregateFairValue_lbl" xml:lang="en-US">Derivative, Net Liability Position, Aggregate Fair Value</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NumberOfInterestRateDerivativesHeld" xlink:label="us-gaap_NumberOfInterestRateDerivativesHeld" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NumberOfInterestRateDerivativesHeld" xlink:to="us-gaap_NumberOfInterestRateDerivativesHeld_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NumberOfInterestRateDerivativesHeld_lbl" xml:lang="en-US">Number of Interest Rate Derivatives Held</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_NumberOfInterestRateDerivativesHeld_lbl" xml:lang="en-US">Interest Rate Derivatives, Number of Instruments</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeLiabilityNotionalAmount" xlink:label="us-gaap_DerivativeLiabilityNotionalAmount" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeLiabilityNotionalAmount" xlink:to="us-gaap_DerivativeLiabilityNotionalAmount_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeLiabilityNotionalAmount_lbl" xml:lang="en-US">Derivative Liability, Notional Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DerivativeLiabilityNotionalAmount_lbl" xml:lang="en-US">Interest Rate Derivatives, Notional Amount</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="us-gaap_BalanceSheetLocationAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BalanceSheetLocationAxis" xlink:to="us-gaap_BalanceSheetLocationAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BalanceSheetLocationAxis_lbl" xml:lang="en-US">Balance Sheet Location [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="us-gaap_BalanceSheetLocationDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BalanceSheetLocationDomain" xlink:to="us-gaap_BalanceSheetLocationDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BalanceSheetLocationDomain_lbl" xml:lang="en-US">Balance Sheet Location [Domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherAssetsMember" xlink:label="us-gaap_OtherAssetsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssetsMember" xlink:to="us-gaap_OtherAssetsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherAssetsMember_lbl" xml:lang="en-US">Other Assets, net</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesMember" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsPayableAndAccruedLiabilitiesMember" xlink:to="us-gaap_AccountsPayableAndAccruedLiabilitiesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesMember_lbl" xml:lang="en-US">Accounts Payable, Accrued Expenses, and Other Liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashFlowHedgesDerivativeInstrumentsAtFairValueNetAbstract" xlink:label="us-gaap_CashFlowHedgesDerivativeInstrumentsAtFairValueNetAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashFlowHedgesDerivativeInstrumentsAtFairValueNetAbstract" xlink:to="us-gaap_CashFlowHedgesDerivativeInstrumentsAtFairValueNetAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashFlowHedgesDerivativeInstrumentsAtFairValueNetAbstract_lbl" xml:lang="en-US">Cash Flow Hedges Derivative Instruments at Fair Value, Net [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CashFlowHedgesDerivativeInstrumentsAtFairValueNetAbstract_lbl" xml:lang="en-US">Derivatives designated as cash flow hedges</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestRateCashFlowHedgeAssetAtFairValue" xlink:label="us-gaap_InterestRateCashFlowHedgeAssetAtFairValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestRateCashFlowHedgeAssetAtFairValue" xlink:to="us-gaap_InterestRateCashFlowHedgeAssetAtFairValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestRateCashFlowHedgeAssetAtFairValue_lbl" xml:lang="en-US">Interest Rate Cash Flow Hedge Asset at Fair Value</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestRateCashFlowHedgeLiabilityAtFairValue" xlink:label="us-gaap_InterestRateCashFlowHedgeLiabilityAtFairValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestRateCashFlowHedgeLiabilityAtFairValue" xlink:to="us-gaap_InterestRateCashFlowHedgeLiabilityAtFairValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestRateCashFlowHedgeLiabilityAtFairValue_lbl" xml:lang="en-US">Interest Rate Cash Flow Hedge Liability at Fair Value</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestExpenseMember" xlink:label="us-gaap_InterestExpenseMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpenseMember" xlink:to="us-gaap_InterestExpenseMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestExpenseMember_lbl" xml:lang="en-US">Interest Expense [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GainLossOnExtinguishmentOfDebtAndSettlementOfRelatedHedgesMember" xlink:label="adc_GainLossOnExtinguishmentOfDebtAndSettlementOfRelatedHedgesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GainLossOnExtinguishmentOfDebtAndSettlementOfRelatedHedgesMember" xlink:to="adc_GainLossOnExtinguishmentOfDebtAndSettlementOfRelatedHedgesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GainLossOnExtinguishmentOfDebtAndSettlementOfRelatedHedgesMember_lbl" xml:lang="en-US">Primary financial statement caption in which reported facts about gain (loss) on extinguishment of debt and settlement of related hedges.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GainLossOnExtinguishmentOfDebtAndSettlementOfRelatedHedgesMember_lbl" xml:lang="en-US">Loss on Extinguishment of Debt and Settlement of Related Hedges [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax" xlink:label="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax" xlink:to="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax_lbl" xml:lang="en-US">Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax_lbl" xml:lang="en-US">Other comprehensive income (loss) - change in fair value and settlement of interest rate swaps</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax" xlink:label="us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax" xlink:to="us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax_lbl" xml:lang="en-US">Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax_lbl" xml:lang="en-US">Derivative Instruments, Amount of Income/(Loss) Reclassified from Accumulated OCI into Expense</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeTable" xlink:label="us-gaap_DerivativeTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeTable" xlink:to="us-gaap_DerivativeTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeTable_lbl" xml:lang="en-US">Derivative [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeLineItems" xlink:label="us-gaap_DerivativeLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeLineItems" xlink:to="us-gaap_DerivativeLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeLineItems_lbl" xml:lang="en-US">Derivative [Line Items]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeAsset" xlink:label="us-gaap_DerivativeFairValueOfDerivativeAsset" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeFairValueOfDerivativeAsset" xlink:to="us-gaap_DerivativeFairValueOfDerivativeAsset_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeFairValueOfDerivativeAsset_lbl" xml:lang="en-US">Derivative Asset, Fair Value, Gross Asset</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DerivativeFairValueOfDerivativeAsset_lbl" xml:lang="en-US">Gross Amounts of Recognized Assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeAssetFairValueGrossLiability" xlink:label="us-gaap_DerivativeAssetFairValueGrossLiability" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeAssetFairValueGrossLiability" xlink:to="us-gaap_DerivativeAssetFairValueGrossLiability_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeAssetFairValueGrossLiability_lbl" xml:lang="en-US">Derivative Asset, Fair Value, Gross Liability</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DerivativeAssetFairValueGrossLiability_lbl" xml:lang="en-US">Gross Amounts Offset in the Statement of Financial Position</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeAssets" xlink:label="us-gaap_DerivativeAssets" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeAssets" xlink:to="us-gaap_DerivativeAssets_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeAssets_lbl" xml:lang="en-US">Derivative Asset</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_DerivativeAssets_lbl" xml:lang="en-US">Net Amounts of Assets presented in the statement of Financial Position</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeAssetNotOffsetPolicyElectionDeduction" xlink:label="us-gaap_DerivativeAssetNotOffsetPolicyElectionDeduction" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeAssetNotOffsetPolicyElectionDeduction" xlink:to="us-gaap_DerivativeAssetNotOffsetPolicyElectionDeduction_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeAssetNotOffsetPolicyElectionDeduction_lbl" xml:lang="en-US">Derivative Asset, Not Offset, Policy Election Deduction</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_DerivativeAssetNotOffsetPolicyElectionDeduction_lbl" xml:lang="en-US">Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeCollateralObligationToReturnCash" xlink:label="us-gaap_DerivativeCollateralObligationToReturnCash" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeCollateralObligationToReturnCash" xlink:to="us-gaap_DerivativeCollateralObligationToReturnCash_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeCollateralObligationToReturnCash_lbl" xml:lang="en-US">Derivative, Collateral, Obligation to Return Cash</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DerivativeCollateralObligationToReturnCash_lbl" xml:lang="en-US">Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Received</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection" xlink:label="us-gaap_DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection" xlink:to="us-gaap_DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection_lbl" xml:lang="en-US">Derivative Asset, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection_lbl" xml:lang="en-US">Gross Amounts Not Offset in the Statement of Financial Position, Net Amount</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeLiability" xlink:label="us-gaap_DerivativeFairValueOfDerivativeLiability" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeFairValueOfDerivativeLiability" xlink:to="us-gaap_DerivativeFairValueOfDerivativeLiability_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeFairValueOfDerivativeLiability_lbl" xml:lang="en-US">Derivative Liability, Fair Value, Gross Liability</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DerivativeFairValueOfDerivativeLiability_lbl" xml:lang="en-US">Gross Amounts of Recognized Liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeLiabilityFairValueGrossAsset" xlink:label="us-gaap_DerivativeLiabilityFairValueGrossAsset" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeLiabilityFairValueGrossAsset" xlink:to="us-gaap_DerivativeLiabilityFairValueGrossAsset_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeLiabilityFairValueGrossAsset_lbl" xml:lang="en-US">Derivative Liability, Fair Value, Gross Asset</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DerivativeLiabilityFairValueGrossAsset_lbl" xml:lang="en-US">Gross Amounts Offset in the Statement of Financial Position</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeLiabilities" xlink:label="us-gaap_DerivativeLiabilities" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeLiabilities" xlink:to="us-gaap_DerivativeLiabilities_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeLiabilities_lbl" xml:lang="en-US">Derivative Liability</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_DerivativeLiabilities_lbl" xml:lang="en-US">Net Amounts of Liabilities presented in the statement of Financial Position</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeLiabilityNotOffsetPolicyElectionDeduction" xlink:label="us-gaap_DerivativeLiabilityNotOffsetPolicyElectionDeduction" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeLiabilityNotOffsetPolicyElectionDeduction" xlink:to="us-gaap_DerivativeLiabilityNotOffsetPolicyElectionDeduction_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeLiabilityNotOffsetPolicyElectionDeduction_lbl" xml:lang="en-US">Derivative Liability, Not Offset, Policy Election Deduction</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_DerivativeLiabilityNotOffsetPolicyElectionDeduction_lbl" xml:lang="en-US">Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeCollateralRightToReclaimCash" xlink:label="us-gaap_DerivativeCollateralRightToReclaimCash" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeCollateralRightToReclaimCash" xlink:to="us-gaap_DerivativeCollateralRightToReclaimCash_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeCollateralRightToReclaimCash_lbl" xml:lang="en-US">Derivative, Collateral, Right to Reclaim Cash</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DerivativeCollateralRightToReclaimCash_lbl" xml:lang="en-US">Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Received</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection" xlink:label="us-gaap_DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection" xlink:to="us-gaap_DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection_lbl" xml:lang="en-US">Derivative Liability, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection_lbl" xml:lang="en-US">Gross Amounts Not Offset in the Statement of Financial Position, Net Amount</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FixedIncomeSecuritiesMember" xlink:label="us-gaap_FixedIncomeSecuritiesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FixedIncomeSecuritiesMember" xlink:to="us-gaap_FixedIncomeSecuritiesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FixedIncomeSecuritiesMember_lbl" xml:lang="en-US">Fixed rate debt</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_VariableRateDemandObligationMember" xlink:label="us-gaap_VariableRateDemandObligationMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_VariableRateDemandObligationMember" xlink:to="us-gaap_VariableRateDemandObligationMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_VariableRateDemandObligationMember_lbl" xml:lang="en-US">Variable rate debt</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentFairValue" xlink:label="us-gaap_DebtInstrumentFairValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentFairValue" xlink:to="us-gaap_DebtInstrumentFairValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentFairValue_lbl" xml:lang="en-US">Debt Instrument, Fair Value Disclosure</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentFairValue_lbl" xml:lang="en-US">Value of debt</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:label="us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:to="us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_lbl" xml:lang="en-US">Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:to="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xml:lang="en-US">Fair Value, Hierarchy [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:to="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xml:lang="en-US">Fair Value Hierarchy [Domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="us-gaap_FairValueInputsLevel2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsLevel2Member" xlink:to="us-gaap_FairValueInputsLevel2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xml:lang="en-US">Fair Value, Inputs, Level 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DerivativesFairValueLineItems" xlink:label="us-gaap_DerivativesFairValueLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativesFairValueLineItems" xlink:to="us-gaap_DerivativesFairValueLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativesFairValueLineItems_lbl" xml:lang="en-US">Derivatives, Fair Value [Line Items]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestRateDerivativeAssetsAtFairValue" xlink:label="us-gaap_InterestRateDerivativeAssetsAtFairValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestRateDerivativeAssetsAtFairValue" xlink:to="us-gaap_InterestRateDerivativeAssetsAtFairValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestRateDerivativeAssetsAtFairValue_lbl" xml:lang="en-US">Interest Rate Derivative Assets, at Fair Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InterestRateDerivativeAssetsAtFairValue_lbl" xml:lang="en-US">Derivative assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestRateDerivativeLiabilitiesAtFairValue" xlink:label="us-gaap_InterestRateDerivativeLiabilitiesAtFairValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestRateDerivativeLiabilitiesAtFairValue" xlink:to="us-gaap_InterestRateDerivativeLiabilitiesAtFairValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestRateDerivativeLiabilitiesAtFairValue_lbl" xml:lang="en-US">Interest Rate Derivative Liabilities, At Fair Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_InterestRateDerivativeLiabilitiesAtFairValue_lbl" xml:lang="en-US">Derivative liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xml:lang="en-US">Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="us-gaap_AwardTypeAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AwardTypeAxis" xlink:to="us-gaap_AwardTypeAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AwardTypeAxis_lbl" xml:lang="en-US">Award Type [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_lbl" xml:lang="en-US">Equity Award [Domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:label="us-gaap_PerformanceSharesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PerformanceSharesMember" xlink:to="us-gaap_PerformanceSharesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PerformanceSharesMember_lbl" xml:lang="en-US">Performance Shares [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PerformanceUnitsAndSharesMember" xlink:label="adc_PerformanceUnitsAndSharesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PerformanceUnitsAndSharesMember" xlink:to="adc_PerformanceUnitsAndSharesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PerformanceUnitsAndSharesMember_lbl" xml:lang="en-US">Performance Units And Shares [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PerformanceUnitsAndSharesMember_lbl" xml:lang="en-US">Performance Units And Shares [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_VestingAxis" xlink:label="us-gaap_VestingAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_VestingAxis" xlink:to="us-gaap_VestingAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_VestingAxis_lbl" xml:lang="en-US">Vesting [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_VestingDomain" xlink:label="us-gaap_VestingDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_VestingDomain" xlink:to="us-gaap_VestingDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_VestingDomain_lbl" xml:lang="en-US">Vesting [Domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationAwardTrancheOneMember" xlink:label="us-gaap_ShareBasedCompensationAwardTrancheOneMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationAwardTrancheOneMember" xlink:to="us-gaap_ShareBasedCompensationAwardTrancheOneMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationAwardTrancheOneMember_lbl" xml:lang="en-US">3 Year Performance period completed</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationAwardTrancheTwoMember" xlink:label="us-gaap_ShareBasedCompensationAwardTrancheTwoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationAwardTrancheTwoMember" xlink:to="us-gaap_ShareBasedCompensationAwardTrancheTwoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationAwardTrancheTwoMember_lbl" xml:lang="en-US">3 Year Performance period to be completed</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award [Line Items]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl" xml:lang="en-US">Issuance of Common stock</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockCapitalSharesReservedForFutureIssuance" xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance" xlink:to="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_lbl" xml:lang="en-US">Common Stock, Capital Shares Reserved for Future Issuance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_lbl" xml:lang="en-US">Common Stock, Capital Shares Reserved for Future Issuance</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_lbl" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_lbl" xml:lang="en-US">Vesting period</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllocatedShareBasedCompensationExpense" xlink:to="us-gaap_AllocatedShareBasedCompensationExpense_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xml:lang="en-US">Share-based Payment Arrangement, Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xml:lang="en-US">Recognized share based compensation</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions" xlink:to="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_lbl" xml:lang="en-US">Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_lbl" xml:lang="en-US">Unrecognized compensation, other than options</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:to="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_lbl" xml:lang="en-US">Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_lbl" xml:lang="en-US">Unrecognized compensation recognition period</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FairValueInputsForfeitureRate" xlink:label="adc_FairValueInputsForfeitureRate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FairValueInputsForfeitureRate" xlink:to="adc_FairValueInputsForfeitureRate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FairValueInputsForfeitureRate_lbl" xml:lang="en-US">Forfeiture rate used as an input to measure fair value.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FairValueInputsForfeitureRate_lbl" xml:lang="en-US">Fair Value Inputs Forfeiture Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="adc_FairValueInputsForfeitureRate_lbl" xml:lang="en-US">Fair value inputs forfeiture rate</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueVested" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueVested" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueVested" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueVested_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueVested_lbl" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueVested_lbl" xml:lang="en-US">Intrinsic value of restricted shares</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_lbl" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_lbl" xml:lang="en-US">Vesting percentage</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ShareBasedCompensationArrangementByShareBasedPaymentAwardAmortizationExpenseTerm" xlink:label="adc_ShareBasedCompensationArrangementByShareBasedPaymentAwardAmortizationExpenseTerm" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ShareBasedCompensationArrangementByShareBasedPaymentAwardAmortizationExpenseTerm" xlink:to="adc_ShareBasedCompensationArrangementByShareBasedPaymentAwardAmortizationExpenseTerm_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ShareBasedCompensationArrangementByShareBasedPaymentAwardAmortizationExpenseTerm_lbl" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Amortization Expense, Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ShareBasedCompensationArrangementByShareBasedPaymentAwardAmortizationExpenseTerm_lbl" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Amortization Expense, Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_ShareBasedCompensationArrangementByShareBasedPaymentAwardAmortizationExpenseTerm_lbl" xml:lang="en-US">Amortization period of compensation expense</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xml:lang="en-US">Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Nonvested, Number</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xml:lang="en-US">Shares Outstanding, at end of the period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xml:lang="en-US">Shares Outstanding, at beginning of the period</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xml:lang="en-US">Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Grants In Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xml:lang="en-US">Shares Outstanding, granted</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xml:lang="en-US">Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Vested In Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xml:lang="en-US">Shares Outstanding, vested</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_lbl" xml:lang="en-US">Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Forfeited In Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_lbl" xml:lang="en-US">Shares Outstanding, forfeited</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US">Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Nonvested, Weighted Average Grant Date Fair Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US">Weighted Average Grant Date Fair Value, at end of the period (in dollars per share)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US">Weighted Average Grant Date Fair Value, at beginning of the period (in dollars per share)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US">Weighted Average Grant Date Fair Value, granted (in dollars per share)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US">Weighted Average Grant Date Fair Value, vested (in dollars per share)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US">Weighted Average Grant Date Fair Value, forfeited (in dollars per share)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xml:lang="en-US">Expected term (years)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" xml:lang="en-US">Volatility</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" xml:lang="en-US">Risk-free rate</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfOutstandingStockMaximum" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfOutstandingStockMaximum" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfOutstandingStockMaximum" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfOutstandingStockMaximum_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfOutstandingStockMaximum_lbl" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Outstanding Stock Maximum</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfOutstandingStockMaximum_lbl" xml:lang="en-US">Percentage of performance shares paid out maximum</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationByPropertyTable" xlink:label="srt_RealEstateAndAccumulatedDepreciationByPropertyTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RealEstateAndAccumulatedDepreciationByPropertyTable" xlink:to="srt_RealEstateAndAccumulatedDepreciationByPropertyTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_RealEstateAndAccumulatedDepreciationByPropertyTable_lbl" xml:lang="en-US">SEC Schedule III, Real Estate and Accumulated Depreciation, by Property [Table]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FacilitiesAxis" xlink:label="adc_FacilitiesAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FacilitiesAxis" xlink:to="adc_FacilitiesAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FacilitiesAxis_lbl" xml:lang="en-US">Facilities [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FacilitiesAxis_lbl" xml:lang="en-US">Facilities [Axis]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FacilitiesDomain" xlink:label="adc_FacilitiesDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FacilitiesDomain" xlink:to="adc_FacilitiesDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FacilitiesDomain_lbl" xml:lang="en-US">Facilities [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FacilitiesDomain_lbl" xml:lang="en-US">Facilities [Domain]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PropertyUnderDevelopmentMember" xlink:label="adc_PropertyUnderDevelopmentMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PropertyUnderDevelopmentMember" xlink:to="adc_PropertyUnderDevelopmentMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PropertyUnderDevelopmentMember_lbl" xml:lang="en-US">Property Under Development [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis" xlink:label="srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis" xlink:to="srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_lbl" xml:lang="en-US">Name of Property [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:label="srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_lbl" xml:lang="en-US">Name of Property [Domain]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BormanCenterMiMember" xlink:label="adc_BormanCenterMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BormanCenterMiMember" xlink:to="adc_BormanCenterMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BormanCenterMiMember_lbl" xml:lang="en-US">Borman Center, Mi [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CapitalPlazaKyMember" xlink:label="adc_CapitalPlazaKyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CapitalPlazaKyMember" xlink:to="adc_CapitalPlazaKyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CapitalPlazaKyMember_lbl" xml:lang="en-US">Capital Plaza, Ky [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GraylingPlazaMiMember" xlink:label="adc_GraylingPlazaMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GraylingPlazaMiMember" xlink:to="adc_GraylingPlazaMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GraylingPlazaMiMember_lbl" xml:lang="en-US">Grayling Plaza, Mi [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OmahaStoreNeMember" xlink:label="adc_OmahaStoreNeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OmahaStoreNeMember" xlink:to="adc_OmahaStoreNeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OmahaStoreNeMember_lbl" xml:lang="en-US">Omaha Store, Ne [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WichitaStoreKsMember" xlink:label="adc_WichitaStoreKsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WichitaStoreKsMember" xlink:to="adc_WichitaStoreKsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WichitaStoreKsMember_lbl" xml:lang="en-US">Wichita Store, Ks [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MonroevillePaMember" xlink:label="adc_MonroevillePaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MonroevillePaMember" xlink:to="adc_MonroevillePaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MonroevillePaMember_lbl" xml:lang="en-US">Monroeville, Pa [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BoyntonBeachFl1Member" xlink:label="adc_BoyntonBeachFl1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BoyntonBeachFl1Member" xlink:to="adc_BoyntonBeachFl1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BoyntonBeachFl1Member_lbl" xml:lang="en-US">Boynton Beach, Fl 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChesterfieldTownshipMiMember" xlink:label="adc_ChesterfieldTownshipMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChesterfieldTownshipMiMember" xlink:to="adc_ChesterfieldTownshipMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChesterfieldTownshipMiMember_lbl" xml:lang="en-US">Chesterfield Township, Mi [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PontiacMiMember" xlink:label="adc_PontiacMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PontiacMiMember" xlink:to="adc_PontiacMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PontiacMiMember_lbl" xml:lang="en-US">Pontiac, Mi [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MtPleasantShoppingCenterMiMember" xlink:label="adc_MtPleasantShoppingCenterMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MtPleasantShoppingCenterMiMember" xlink:to="adc_MtPleasantShoppingCenterMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MtPleasantShoppingCenterMiMember_lbl" xml:lang="en-US">Mt Pleasant Shopping Center, Mi [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RochesterMiMember" xlink:label="adc_RochesterMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RochesterMiMember" xlink:to="adc_RochesterMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RochesterMiMember_lbl" xml:lang="en-US">Rochester, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_YpsilantiMiMember" xlink:label="adc_YpsilantiMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_YpsilantiMiMember" xlink:to="adc_YpsilantiMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_YpsilantiMiMember_lbl" xml:lang="en-US">Ypsilanti, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PetoskeyMiMember" xlink:label="adc_PetoskeyMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PetoskeyMiMember" xlink:to="adc_PetoskeyMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PetoskeyMiMember_lbl" xml:lang="en-US">Petoskey, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FlintMi1Member" xlink:label="adc_FlintMi1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FlintMi1Member" xlink:to="adc_FlintMi1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FlintMi1Member_lbl" xml:lang="en-US">Flint, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FlintMi2Member" xlink:label="adc_FlintMi2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FlintMi2Member" xlink:to="adc_FlintMi2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FlintMi2Member_lbl" xml:lang="en-US">Flint, MI 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NewBaltimoreMiMember" xlink:label="adc_NewBaltimoreMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NewBaltimoreMiMember" xlink:to="adc_NewBaltimoreMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NewBaltimoreMiMember_lbl" xml:lang="en-US">New Baltimore, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FlintMi3Member" xlink:label="adc_FlintMi3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FlintMi3Member" xlink:to="adc_FlintMi3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FlintMi3Member_lbl" xml:lang="en-US">Flint, MI 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_IndianapolisInMember" xlink:label="adc_IndianapolisInMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_IndianapolisInMember" xlink:to="adc_IndianapolisInMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_IndianapolisInMember_lbl" xml:lang="en-US">Indianapolis, IN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FlintMi4Member" xlink:label="adc_FlintMi4Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FlintMi4Member" xlink:to="adc_FlintMi4Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FlintMi4Member_lbl" xml:lang="en-US">Flint, MI 4 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CantonTwpMiMember" xlink:label="adc_CantonTwpMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CantonTwpMiMember" xlink:to="adc_CantonTwpMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CantonTwpMiMember_lbl" xml:lang="en-US">Canton Twp, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FlintMi5Member" xlink:label="adc_FlintMi5Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FlintMi5Member" xlink:to="adc_FlintMi5Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FlintMi5Member_lbl" xml:lang="en-US">Flint, MI 5 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AlbionNyMember" xlink:label="adc_AlbionNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AlbionNyMember" xlink:to="adc_AlbionNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AlbionNyMember_lbl" xml:lang="en-US">Albion, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FlintMi6Member" xlink:label="adc_FlintMi6Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FlintMi6Member" xlink:to="adc_FlintMi6Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FlintMi6Member_lbl" xml:lang="en-US">Flint, MI 6 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LansingMiMember" xlink:label="adc_LansingMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LansingMiMember" xlink:to="adc_LansingMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LansingMiMember_lbl" xml:lang="en-US">Lansing, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BoyntonBeachFlMember" xlink:label="adc_BoyntonBeachFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BoyntonBeachFlMember" xlink:to="adc_BoyntonBeachFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BoyntonBeachFlMember_lbl" xml:lang="en-US">Boynton Beach, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RosevilleMiMember" xlink:label="adc_RosevilleMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RosevilleMiMember" xlink:to="adc_RosevilleMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RosevilleMiMember_lbl" xml:lang="en-US">Roseville, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MtPleasantMiMember" xlink:label="adc_MtPleasantMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MtPleasantMiMember" xlink:to="adc_MtPleasantMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MtPleasantMiMember_lbl" xml:lang="en-US">Mt. Pleasant, MI</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MtPleasantMiMember_lbl" xml:lang="en-US">Mt Pleasant, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NCapeMayNjMember" xlink:label="adc_NCapeMayNjMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NCapeMayNjMember" xlink:to="adc_NCapeMayNjMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NCapeMayNjMember_lbl" xml:lang="en-US">N Cape May, NJ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SummitTwpMiMember" xlink:label="adc_SummitTwpMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SummitTwpMiMember" xlink:to="adc_SummitTwpMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SummitTwpMiMember_lbl" xml:lang="en-US">Summit Twp, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BarnesvilleGaMember" xlink:label="adc_BarnesvilleGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BarnesvilleGaMember" xlink:to="adc_BarnesvilleGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BarnesvilleGaMember_lbl" xml:lang="en-US">Barnesville, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EastLansingMiMember" xlink:label="adc_EastLansingMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EastLansingMiMember" xlink:to="adc_EastLansingMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EastLansingMiMember_lbl" xml:lang="en-US">East Lansing, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MacombTownshipMiMember" xlink:label="adc_MacombTownshipMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MacombTownshipMiMember" xlink:to="adc_MacombTownshipMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MacombTownshipMiMember_lbl" xml:lang="en-US">Macomb Township, MI</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BrightonMiMember" xlink:label="adc_BrightonMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BrightonMiMember" xlink:to="adc_BrightonMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BrightonMiMember_lbl" xml:lang="en-US">Brighton, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SouthfieldMi1Member" xlink:label="adc_SouthfieldMi1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SouthfieldMi1Member" xlink:to="adc_SouthfieldMi1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SouthfieldMi1Member_lbl" xml:lang="en-US">Southfield, MI 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AtchisonKsMember" xlink:label="adc_AtchisonKsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AtchisonKsMember" xlink:to="adc_AtchisonKsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AtchisonKsMember_lbl" xml:lang="en-US">Atchison, KS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JohnstownOhMember" xlink:label="adc_JohnstownOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JohnstownOhMember" xlink:to="adc_JohnstownOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JohnstownOhMember_lbl" xml:lang="en-US">Johnstown, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LakeInHillsIlMember" xlink:label="adc_LakeInHillsIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LakeInHillsIlMember" xlink:to="adc_LakeInHillsIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LakeInHillsIlMember_lbl" xml:lang="en-US">Lake in the Hills, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ConcordNcMember" xlink:label="adc_ConcordNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ConcordNcMember" xlink:to="adc_ConcordNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ConcordNcMember_lbl" xml:lang="en-US">Concord, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AntiochIlMember" xlink:label="adc_AntiochIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AntiochIlMember" xlink:to="adc_AntiochIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AntiochIlMember_lbl" xml:lang="en-US">Antioch, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MansfieldCtMember" xlink:label="adc_MansfieldCtMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MansfieldCtMember" xlink:to="adc_MansfieldCtMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MansfieldCtMember_lbl" xml:lang="en-US">Mansfield, CT [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SpringGroveIlMember" xlink:label="adc_SpringGroveIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SpringGroveIlMember" xlink:to="adc_SpringGroveIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SpringGroveIlMember_lbl" xml:lang="en-US">Spring Grove, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TallahasseeFlMember" xlink:label="adc_TallahasseeFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TallahasseeFlMember" xlink:to="adc_TallahasseeFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TallahasseeFlMember_lbl" xml:lang="en-US">Tallahassee, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WilmingtonNcMember" xlink:label="adc_WilmingtonNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WilmingtonNcMember" xlink:to="adc_WilmingtonNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WilmingtonNcMember_lbl" xml:lang="en-US">Wilmington, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MariettaGaMember" xlink:label="adc_MariettaGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MariettaGaMember" xlink:to="adc_MariettaGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MariettaGaMember_lbl" xml:lang="en-US">Marietta, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BaltimoreMdMember" xlink:label="adc_BaltimoreMdMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BaltimoreMdMember" xlink:to="adc_BaltimoreMdMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BaltimoreMdMember_lbl" xml:lang="en-US">Baltimore, MD [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DallasTxMember" xlink:label="adc_DallasTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DallasTxMember" xlink:to="adc_DallasTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DallasTxMember_lbl" xml:lang="en-US">Dallas, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChandlerAzMember" xlink:label="adc_ChandlerAzMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChandlerAzMember" xlink:to="adc_ChandlerAzMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChandlerAzMember_lbl" xml:lang="en-US">Chandler, AZ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NewLenoxIlMember" xlink:label="adc_NewLenoxIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NewLenoxIlMember" xlink:to="adc_NewLenoxIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NewLenoxIlMember_lbl" xml:lang="en-US">New Lenox, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RosevilleCaMember" xlink:label="adc_RosevilleCaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RosevilleCaMember" xlink:to="adc_RosevilleCaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RosevilleCaMember_lbl" xml:lang="en-US">Roseville, CA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FortWaltonBeachFlMember" xlink:label="adc_FortWaltonBeachFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FortWaltonBeachFlMember" xlink:to="adc_FortWaltonBeachFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FortWaltonBeachFlMember_lbl" xml:lang="en-US">Fort Walton Beach, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LeawoodKsMember" xlink:label="adc_LeawoodKsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LeawoodKsMember" xlink:to="adc_LeawoodKsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LeawoodKsMember_lbl" xml:lang="en-US">Leawood, KS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SaltLakeCityUtMember" xlink:label="adc_SaltLakeCityUtMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SaltLakeCityUtMember" xlink:to="adc_SaltLakeCityUtMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SaltLakeCityUtMember_lbl" xml:lang="en-US">Salt Lake City, UT [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BurtonMiMember" xlink:label="adc_BurtonMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BurtonMiMember" xlink:to="adc_BurtonMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BurtonMiMember_lbl" xml:lang="en-US">Burton, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MacombTownshipMi2Member" xlink:label="adc_MacombTownshipMi2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MacombTownshipMi2Member" xlink:to="adc_MacombTownshipMi2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MacombTownshipMi2Member_lbl" xml:lang="en-US">Macomb Township, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MadisonAlMember" xlink:label="adc_MadisonAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MadisonAlMember" xlink:to="adc_MadisonAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MadisonAlMember_lbl" xml:lang="en-US">Madison, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WalkerMiMember" xlink:label="adc_WalkerMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WalkerMiMember" xlink:to="adc_WalkerMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WalkerMiMember_lbl" xml:lang="en-US">Walker, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PortlandOrMember" xlink:label="adc_PortlandOrMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PortlandOrMember" xlink:to="adc_PortlandOrMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PortlandOrMember_lbl" xml:lang="en-US">Portland, OR [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CochranGaMember" xlink:label="adc_CochranGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CochranGaMember" xlink:to="adc_CochranGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CochranGaMember_lbl" xml:lang="en-US">Cochran, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BatonRougeLaMember" xlink:label="adc_BatonRougeLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BatonRougeLaMember" xlink:to="adc_BatonRougeLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BatonRougeLaMember_lbl" xml:lang="en-US">Baton Rouge, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SouthfieldMiMember" xlink:label="adc_SouthfieldMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SouthfieldMiMember" xlink:to="adc_SouthfieldMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SouthfieldMiMember_lbl" xml:lang="en-US">Southfield, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CliftonHeightsPaMember" xlink:label="adc_CliftonHeightsPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CliftonHeightsPaMember" xlink:to="adc_CliftonHeightsPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CliftonHeightsPaMember_lbl" xml:lang="en-US">Clifton Heights, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NewarkDeMember" xlink:label="adc_NewarkDeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NewarkDeMember" xlink:to="adc_NewarkDeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NewarkDeMember_lbl" xml:lang="en-US">Newark, DE [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_VinelandNjMember" xlink:label="adc_VinelandNjMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_VinelandNjMember" xlink:to="adc_VinelandNjMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_VinelandNjMember_lbl" xml:lang="en-US">Vineland, NJ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FortMillScMember" xlink:label="adc_FortMillScMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FortMillScMember" xlink:to="adc_FortMillScMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FortMillScMember_lbl" xml:lang="en-US">Fort Mill, SC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SpartanburgScMember" xlink:label="adc_SpartanburgScMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SpartanburgScMember" xlink:to="adc_SpartanburgScMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SpartanburgScMember_lbl" xml:lang="en-US">Spartanburg, SC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SpringfieldIlMember" xlink:label="adc_SpringfieldIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SpringfieldIlMember" xlink:to="adc_SpringfieldIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SpringfieldIlMember_lbl" xml:lang="en-US">Springfield, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JacksonvilleNcMember" xlink:label="adc_JacksonvilleNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JacksonvilleNcMember" xlink:to="adc_JacksonvilleNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JacksonvilleNcMember_lbl" xml:lang="en-US">Jacksonville, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MorrowGaMember" xlink:label="adc_MorrowGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MorrowGaMember" xlink:to="adc_MorrowGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MorrowGaMember_lbl" xml:lang="en-US">Morrow, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CharlotteNcMember" xlink:label="adc_CharlotteNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CharlotteNcMember" xlink:to="adc_CharlotteNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CharlotteNcMember_lbl" xml:lang="en-US">Charlotte, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LyonsGaMember" xlink:label="adc_LyonsGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LyonsGaMember" xlink:to="adc_LyonsGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LyonsGaMember_lbl" xml:lang="en-US">Lyons, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FuquayvarinaNcMember" xlink:label="adc_FuquayvarinaNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FuquayvarinaNcMember" xlink:to="adc_FuquayvarinaNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FuquayvarinaNcMember_lbl" xml:lang="en-US">Fuquay-Varina, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MinneapolisMnMember" xlink:label="adc_MinneapolisMnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MinneapolisMnMember" xlink:to="adc_MinneapolisMnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MinneapolisMnMember_lbl" xml:lang="en-US">Minneapolis, MN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LakeZurichIlMember" xlink:label="adc_LakeZurichIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LakeZurichIlMember" xlink:to="adc_LakeZurichIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LakeZurichIlMember_lbl" xml:lang="en-US">Lake Zurich, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HarlingenTxMember" xlink:label="adc_HarlingenTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HarlingenTxMember" xlink:to="adc_HarlingenTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HarlingenTxMember_lbl" xml:lang="en-US">Harlingen, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PensacolaFl2Member" xlink:label="adc_PensacolaFl2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PensacolaFl2Member" xlink:to="adc_PensacolaFl2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PensacolaFl2Member_lbl" xml:lang="en-US">Pensacola, FL 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_VeniceFlMember" xlink:label="adc_VeniceFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_VeniceFlMember" xlink:to="adc_VeniceFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_VeniceFlMember_lbl" xml:lang="en-US">Venice, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_StJosephMoMember" xlink:label="adc_StJosephMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_StJosephMoMember" xlink:to="adc_StJosephMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_StJosephMoMember_lbl" xml:lang="en-US">St. Joseph, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_StathamGaMember" xlink:label="adc_StathamGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_StathamGaMember" xlink:to="adc_StathamGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_StathamGaMember_lbl" xml:lang="en-US">Statham, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NorthLasVegasNvMember" xlink:label="adc_NorthLasVegasNvMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NorthLasVegasNvMember" xlink:to="adc_NorthLasVegasNvMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NorthLasVegasNvMember_lbl" xml:lang="en-US">North Las Vegas, NV [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MemphisTnMember" xlink:label="adc_MemphisTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MemphisTnMember" xlink:to="adc_MemphisTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MemphisTnMember_lbl" xml:lang="en-US">Memphis, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RanchoCordovaCaMember" xlink:label="adc_RanchoCordovaCaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RanchoCordovaCaMember" xlink:to="adc_RanchoCordovaCaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RanchoCordovaCaMember_lbl" xml:lang="en-US">Rancho Cordova, CA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_KissimmeeFlMember" xlink:label="adc_KissimmeeFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_KissimmeeFlMember" xlink:to="adc_KissimmeeFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_KissimmeeFlMember_lbl" xml:lang="en-US">Kissimmee, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PinellasParkFlMember" xlink:label="adc_PinellasParkFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PinellasParkFlMember" xlink:to="adc_PinellasParkFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PinellasParkFlMember_lbl" xml:lang="en-US">Pinellas Park, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ManchesterCtMember" xlink:label="adc_ManchesterCtMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ManchesterCtMember" xlink:to="adc_ManchesterCtMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ManchesterCtMember_lbl" xml:lang="en-US">Manchester, CT [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RapidCitySdMember" xlink:label="adc_RapidCitySdMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RapidCitySdMember" xlink:to="adc_RapidCitySdMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RapidCitySdMember_lbl" xml:lang="en-US">Rapid City, SD [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChicagoIlMember" xlink:label="adc_ChicagoIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChicagoIlMember" xlink:to="adc_ChicagoIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChicagoIlMember_lbl" xml:lang="en-US">Chicago, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BrooklynOhMember" xlink:label="adc_BrooklynOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BrooklynOhMember" xlink:to="adc_BrooklynOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BrooklynOhMember_lbl" xml:lang="en-US">Brooklyn, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MadisonvilleTxMember" xlink:label="adc_MadisonvilleTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MadisonvilleTxMember" xlink:to="adc_MadisonvilleTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MadisonvilleTxMember_lbl" xml:lang="en-US">Madisonville, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ForestMsMember" xlink:label="adc_ForestMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ForestMsMember" xlink:to="adc_ForestMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ForestMsMember_lbl" xml:lang="en-US">Forest, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SunValleyNvMember" xlink:label="adc_SunValleyNvMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SunValleyNvMember" xlink:to="adc_SunValleyNvMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SunValleyNvMember_lbl" xml:lang="en-US">Sun Valley, NV [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RochesterNyMember" xlink:label="adc_RochesterNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RochesterNyMember" xlink:to="adc_RochesterNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RochesterNyMember_lbl" xml:lang="en-US">Rochester, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AllentownPaMember" xlink:label="adc_AllentownPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AllentownPaMember" xlink:to="adc_AllentownPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AllentownPaMember_lbl" xml:lang="en-US">Allentown, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CasselberryFlMember" xlink:label="adc_CasselberryFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CasselberryFlMember" xlink:to="adc_CasselberryFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CasselberryFlMember_lbl" xml:lang="en-US">Casselberry, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BerwynIlMember" xlink:label="adc_BerwynIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BerwynIlMember" xlink:to="adc_BerwynIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BerwynIlMember_lbl" xml:lang="en-US">Berwyn, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GrandForksNdMember" xlink:label="adc_GrandForksNdMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GrandForksNdMember" xlink:to="adc_GrandForksNdMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GrandForksNdMember_lbl" xml:lang="en-US">Grand Forks, ND [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AnnArborMi2Member" xlink:label="adc_AnnArborMi2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AnnArborMi2Member" xlink:to="adc_AnnArborMi2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AnnArborMi2Member_lbl" xml:lang="en-US">Ann Arbor, MI 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JoplinMoMember" xlink:label="adc_JoplinMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JoplinMoMember" xlink:to="adc_JoplinMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JoplinMoMember_lbl" xml:lang="en-US">Joplin, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RedBayAlMember" xlink:label="adc_RedBayAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RedBayAlMember" xlink:to="adc_RedBayAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RedBayAlMember_lbl" xml:lang="en-US">Red Bay, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BirminghamAlMember" xlink:label="adc_BirminghamAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BirminghamAlMember" xlink:to="adc_BirminghamAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BirminghamAlMember_lbl" xml:lang="en-US">Birmingham, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BirminghamAl2Member" xlink:label="adc_BirminghamAl2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BirminghamAl2Member" xlink:to="adc_BirminghamAl2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BirminghamAl2Member_lbl" xml:lang="en-US">Birmingham, AL 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BirminghamAl3Member" xlink:label="adc_BirminghamAl3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BirminghamAl3Member" xlink:to="adc_BirminghamAl3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BirminghamAl3Member_lbl" xml:lang="en-US">Birmingham, AL 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BirminghamAl4Member" xlink:label="adc_BirminghamAl4Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BirminghamAl4Member" xlink:to="adc_BirminghamAl4Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BirminghamAl4Member_lbl" xml:lang="en-US">Birmingham, AL 4 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MontgomeryAlMember" xlink:label="adc_MontgomeryAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MontgomeryAlMember" xlink:to="adc_MontgomeryAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MontgomeryAlMember_lbl" xml:lang="en-US">Montgomery, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LittletonCoMember" xlink:label="adc_LittletonCoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LittletonCoMember" xlink:to="adc_LittletonCoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LittletonCoMember_lbl" xml:lang="en-US">Littleton, CO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_StPetersburgFlMember" xlink:label="adc_StPetersburgFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_StPetersburgFlMember" xlink:to="adc_StPetersburgFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_StPetersburgFlMember_lbl" xml:lang="en-US">St Petersburg, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_StAugustineFlMember" xlink:label="adc_StAugustineFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_StAugustineFlMember" xlink:to="adc_StAugustineFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_StAugustineFlMember_lbl" xml:lang="en-US">St Augustine, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EastPalatkaFlMember" xlink:label="adc_EastPalatkaFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EastPalatkaFlMember" xlink:to="adc_EastPalatkaFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EastPalatkaFlMember_lbl" xml:lang="en-US">East Palatka, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PensacolaFlMember" xlink:label="adc_PensacolaFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PensacolaFlMember" xlink:to="adc_PensacolaFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PensacolaFlMember_lbl" xml:lang="en-US">Pensacola, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FortOglethorpeGaMember" xlink:label="adc_FortOglethorpeGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FortOglethorpeGaMember" xlink:to="adc_FortOglethorpeGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FortOglethorpeGaMember_lbl" xml:lang="en-US">Fort Oglethorpe, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NewLenoxIl2Member" xlink:label="adc_NewLenoxIl2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NewLenoxIl2Member" xlink:to="adc_NewLenoxIl2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NewLenoxIl2Member_lbl" xml:lang="en-US">New Lenox, IL 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RockfordIlMember" xlink:label="adc_RockfordIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RockfordIlMember" xlink:to="adc_RockfordIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RockfordIlMember_lbl" xml:lang="en-US">Rockford, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TerreHauteInMember" xlink:label="adc_TerreHauteInMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TerreHauteInMember" xlink:to="adc_TerreHauteInMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TerreHauteInMember_lbl" xml:lang="en-US">Terre Haute, IN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JunctionCityKsMember" xlink:label="adc_JunctionCityKsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JunctionCityKsMember" xlink:to="adc_JunctionCityKsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JunctionCityKsMember_lbl" xml:lang="en-US">Junction City, KS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BatonRougeLa3Member" xlink:label="adc_BatonRougeLa3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BatonRougeLa3Member" xlink:to="adc_BatonRougeLa3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BatonRougeLa3Member_lbl" xml:lang="en-US">Baton Rouge, LA 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LincolnParkMiMember" xlink:label="adc_LincolnParkMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LincolnParkMiMember" xlink:to="adc_LincolnParkMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LincolnParkMiMember_lbl" xml:lang="en-US">Lincoln Park, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NoviMiMember" xlink:label="adc_NoviMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NoviMiMember" xlink:to="adc_NoviMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NoviMiMember_lbl" xml:lang="en-US">Novi, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BloomfieldHillsMiMember" xlink:label="adc_BloomfieldHillsMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BloomfieldHillsMiMember" xlink:to="adc_BloomfieldHillsMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BloomfieldHillsMiMember_lbl" xml:lang="en-US">Bloomfield Hills, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JacksonMsMember" xlink:label="adc_JacksonMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JacksonMsMember" xlink:to="adc_JacksonMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JacksonMsMember_lbl" xml:lang="en-US">Jackson, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_IrvingtonNjMember" xlink:label="adc_IrvingtonNjMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_IrvingtonNjMember" xlink:to="adc_IrvingtonNjMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_IrvingtonNjMember_lbl" xml:lang="en-US">Irvington, NJ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JamestownNdMember" xlink:label="adc_JamestownNdMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JamestownNdMember" xlink:to="adc_JamestownNdMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JamestownNdMember_lbl" xml:lang="en-US">Jamestown, ND [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ToledoOhMember" xlink:label="adc_ToledoOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ToledoOhMember" xlink:to="adc_ToledoOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ToledoOhMember_lbl" xml:lang="en-US">Toledo, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ToledoOh2Member" xlink:label="adc_ToledoOh2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ToledoOh2Member" xlink:to="adc_ToledoOh2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ToledoOh2Member_lbl" xml:lang="en-US">Toledo, OH 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ToledoOh3Member" xlink:label="adc_ToledoOh3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ToledoOh3Member" xlink:to="adc_ToledoOh3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ToledoOh3Member_lbl" xml:lang="en-US">Toledo, OH 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OrvilleOhMember" xlink:label="adc_OrvilleOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OrvilleOhMember" xlink:to="adc_OrvilleOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OrvilleOhMember_lbl" xml:lang="en-US">Orville, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CalcuttaOhMember" xlink:label="adc_CalcuttaOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CalcuttaOhMember" xlink:to="adc_CalcuttaOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CalcuttaOhMember_lbl" xml:lang="en-US">Calcutta, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ColumbusOhMember" xlink:label="adc_ColumbusOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ColumbusOhMember" xlink:to="adc_ColumbusOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ColumbusOhMember_lbl" xml:lang="en-US">Columbus, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TulsaOkMember" xlink:label="adc_TulsaOkMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TulsaOkMember" xlink:to="adc_TulsaOkMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TulsaOkMember_lbl" xml:lang="en-US">Tulsa, OK [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LigonierPaMember" xlink:label="adc_LigonierPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LigonierPaMember" xlink:to="adc_LigonierPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LigonierPaMember_lbl" xml:lang="en-US">Ligonier, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LimerickPaMember" xlink:label="adc_LimerickPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LimerickPaMember" xlink:to="adc_LimerickPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LimerickPaMember_lbl" xml:lang="en-US">Limerick, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HarrisburgPaMember" xlink:label="adc_HarrisburgPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HarrisburgPaMember" xlink:to="adc_HarrisburgPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HarrisburgPaMember_lbl" xml:lang="en-US">Harrisburg, PA [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HarrisburgPaMember_lbl" xml:lang="en-US">Harrisburg, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AndersonScMember" xlink:label="adc_AndersonScMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AndersonScMember" xlink:to="adc_AndersonScMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AndersonScMember_lbl" xml:lang="en-US">Anderson, SC [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AndersonScMember_lbl" xml:lang="en-US">Anderson, SC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EasleyScMember" xlink:label="adc_EasleyScMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EasleyScMember" xlink:to="adc_EasleyScMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EasleyScMember_lbl" xml:lang="en-US">Easley, SC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SpartanburgSc2Member" xlink:label="adc_SpartanburgSc2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SpartanburgSc2Member" xlink:to="adc_SpartanburgSc2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SpartanburgSc2Member_lbl" xml:lang="en-US">Spartanburg, SC 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SpartanburgSc3Member" xlink:label="adc_SpartanburgSc3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SpartanburgSc3Member" xlink:to="adc_SpartanburgSc3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SpartanburgSc3Member_lbl" xml:lang="en-US">Spartanburg, SC 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ColumbiaScMember" xlink:label="adc_ColumbiaScMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ColumbiaScMember" xlink:to="adc_ColumbiaScMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ColumbiaScMember_lbl" xml:lang="en-US">Columbia, SC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AlcoaTnMember" xlink:label="adc_AlcoaTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AlcoaTnMember" xlink:to="adc_AlcoaTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AlcoaTnMember_lbl" xml:lang="en-US">Alcoa, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_KnoxvilleTnMember" xlink:label="adc_KnoxvilleTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_KnoxvilleTnMember" xlink:to="adc_KnoxvilleTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_KnoxvilleTnMember_lbl" xml:lang="en-US">Knoxville, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RedBankTnMember" xlink:label="adc_RedBankTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RedBankTnMember" xlink:to="adc_RedBankTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RedBankTnMember_lbl" xml:lang="en-US">Red Bank, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NewTazewellTnMember" xlink:label="adc_NewTazewellTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NewTazewellTnMember" xlink:to="adc_NewTazewellTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NewTazewellTnMember_lbl" xml:lang="en-US">New Tazewell, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MaryvilleTnMember" xlink:label="adc_MaryvilleTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MaryvilleTnMember" xlink:to="adc_MaryvilleTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MaryvilleTnMember_lbl" xml:lang="en-US">Maryville, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MorristownTnMember" xlink:label="adc_MorristownTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MorristownTnMember" xlink:to="adc_MorristownTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MorristownTnMember_lbl" xml:lang="en-US">Morristown, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ClintonTnMember" xlink:label="adc_ClintonTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ClintonTnMember" xlink:to="adc_ClintonTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ClintonTnMember_lbl" xml:lang="en-US">Clinton, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_KnoxvilleTn2Member" xlink:label="adc_KnoxvilleTn2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_KnoxvilleTn2Member" xlink:to="adc_KnoxvilleTn2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_KnoxvilleTn2Member_lbl" xml:lang="en-US">Knoxville, TN 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SweetwaterTnMember" xlink:label="adc_SweetwaterTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SweetwaterTnMember" xlink:to="adc_SweetwaterTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SweetwaterTnMember_lbl" xml:lang="en-US">Sweetwater, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MckinneyTxMember" xlink:label="adc_MckinneyTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MckinneyTxMember" xlink:to="adc_MckinneyTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MckinneyTxMember_lbl" xml:lang="en-US">McKinney, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ForestVaMember" xlink:label="adc_ForestVaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ForestVaMember" xlink:to="adc_ForestVaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ForestVaMember_lbl" xml:lang="en-US">Forest, VA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ColonialHeightsVaMember" xlink:label="adc_ColonialHeightsVaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ColonialHeightsVaMember" xlink:to="adc_ColonialHeightsVaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ColonialHeightsVaMember_lbl" xml:lang="en-US">Colonial Heights, VA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GlenAllenVaMember" xlink:label="adc_GlenAllenVaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GlenAllenVaMember" xlink:to="adc_GlenAllenVaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GlenAllenVaMember_lbl" xml:lang="en-US">Glen Allen, VA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BurlingtonWaMember" xlink:label="adc_BurlingtonWaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BurlingtonWaMember" xlink:to="adc_BurlingtonWaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BurlingtonWaMember_lbl" xml:lang="en-US">Burlington, WA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WausauWiMember" xlink:label="adc_WausauWiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WausauWiMember" xlink:to="adc_WausauWiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WausauWiMember_lbl" xml:lang="en-US">Wausau, WI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FoleyAlMember" xlink:label="adc_FoleyAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FoleyAlMember" xlink:to="adc_FoleyAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FoleyAlMember_lbl" xml:lang="en-US">Foley AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SulligentAlMember" xlink:label="adc_SulligentAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SulligentAlMember" xlink:to="adc_SulligentAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SulligentAlMember_lbl" xml:lang="en-US">Sulligent, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EutawAlMember" xlink:label="adc_EutawAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EutawAlMember" xlink:to="adc_EutawAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EutawAlMember_lbl" xml:lang="en-US">Eutaw, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TallasseeAlMember" xlink:label="adc_TallasseeAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TallasseeAlMember" xlink:to="adc_TallasseeAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TallasseeAlMember_lbl" xml:lang="en-US">Tallassee, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OrangeParkAlMember" xlink:label="adc_OrangeParkAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OrangeParkAlMember" xlink:to="adc_OrangeParkAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OrangeParkAlMember_lbl" xml:lang="en-US">Orange Park, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PaceFlMember" xlink:label="adc_PaceFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PaceFlMember" xlink:to="adc_PaceFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PaceFlMember_lbl" xml:lang="en-US">Pace, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PensacolaFl3Member" xlink:label="adc_PensacolaFl3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PensacolaFl3Member" xlink:to="adc_PensacolaFl3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PensacolaFl3Member_lbl" xml:lang="en-US">Pensacola, FL3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FreeportFlMember" xlink:label="adc_FreeportFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FreeportFlMember" xlink:to="adc_FreeportFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FreeportFlMember_lbl" xml:lang="en-US">Freeport, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GlenwoodGaMember" xlink:label="adc_GlenwoodGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GlenwoodGaMember" xlink:to="adc_GlenwoodGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GlenwoodGaMember_lbl" xml:lang="en-US">Glenwood, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AlbanyGaMember" xlink:label="adc_AlbanyGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AlbanyGaMember" xlink:to="adc_AlbanyGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AlbanyGaMember_lbl" xml:lang="en-US">Albany, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BelvidereIlMember" xlink:label="adc_BelvidereIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BelvidereIlMember" xlink:to="adc_BelvidereIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BelvidereIlMember_lbl" xml:lang="en-US">Belvidere, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PeruIlMember" xlink:label="adc_PeruIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PeruIlMember" xlink:to="adc_PeruIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PeruIlMember_lbl" xml:lang="en-US">Peru, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DavenportIaMember" xlink:label="adc_DavenportIaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DavenportIaMember" xlink:to="adc_DavenportIaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DavenportIaMember_lbl" xml:lang="en-US">Davenport, IA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BuffaloCenterIaMember" xlink:label="adc_BuffaloCenterIaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BuffaloCenterIaMember" xlink:to="adc_BuffaloCenterIaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BuffaloCenterIaMember_lbl" xml:lang="en-US">Buffalo Center, IA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SheffieldIaMember" xlink:label="adc_SheffieldIaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SheffieldIaMember" xlink:to="adc_SheffieldIaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SheffieldIaMember_lbl" xml:lang="en-US">Sheffield, IA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LenexaKsMember" xlink:label="adc_LenexaKsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LenexaKsMember" xlink:to="adc_LenexaKsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LenexaKsMember_lbl" xml:lang="en-US">Lenexa, KS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TompkinsvilleKyMember" xlink:label="adc_TompkinsvilleKyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TompkinsvilleKyMember" xlink:to="adc_TompkinsvilleKyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TompkinsvilleKyMember_lbl" xml:lang="en-US">Tompkinsville , KY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HazardKyMember" xlink:label="adc_HazardKyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HazardKyMember" xlink:to="adc_HazardKyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HazardKyMember_lbl" xml:lang="en-US">Hazard, KY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PortlandMaMember" xlink:label="adc_PortlandMaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PortlandMaMember" xlink:to="adc_PortlandMaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PortlandMaMember_lbl" xml:lang="en-US">Portland, MA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FlintMiMember" xlink:label="adc_FlintMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FlintMiMember" xlink:to="adc_FlintMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FlintMiMember_lbl" xml:lang="en-US">Flint, MI 7 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HutchinsonMnMember" xlink:label="adc_HutchinsonMnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HutchinsonMnMember" xlink:to="adc_HutchinsonMnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HutchinsonMnMember_lbl" xml:lang="en-US">Hutchinson, MN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LowryCityMoMember" xlink:label="adc_LowryCityMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LowryCityMoMember" xlink:to="adc_LowryCityMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LowryCityMoMember_lbl" xml:lang="en-US">Lowry City, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BransonMoMember" xlink:label="adc_BransonMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BransonMoMember" xlink:to="adc_BransonMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BransonMoMember_lbl" xml:lang="en-US">Branson, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BransonMo1Member" xlink:label="adc_BransonMo1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BransonMo1Member" xlink:to="adc_BransonMo1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BransonMo1Member_lbl" xml:lang="en-US">Branson, MO1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EnfieldNhMember" xlink:label="adc_EnfieldNhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EnfieldNhMember" xlink:to="adc_EnfieldNhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EnfieldNhMember_lbl" xml:lang="en-US">Enfield, NH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MariettaOhMember" xlink:label="adc_MariettaOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MariettaOhMember" xlink:to="adc_MariettaOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MariettaOhMember_lbl" xml:lang="en-US">Marietta, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FranklinOhMember" xlink:label="adc_FranklinOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FranklinOhMember" xlink:to="adc_FranklinOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FranklinOhMember_lbl" xml:lang="en-US">Franklin, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ElyriaOhMember" xlink:label="adc_ElyriaOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ElyriaOhMember" xlink:to="adc_ElyriaOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ElyriaOhMember_lbl" xml:lang="en-US">Elyria, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ElyriaOh1Member" xlink:label="adc_ElyriaOh1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ElyriaOh1Member" xlink:to="adc_ElyriaOh1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ElyriaOh1Member_lbl" xml:lang="en-US">Elyria, OH1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BedfordHeightsOhMember" xlink:label="adc_BedfordHeightsOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BedfordHeightsOhMember" xlink:to="adc_BedfordHeightsOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BedfordHeightsOhMember_lbl" xml:lang="en-US">Bedford Heights, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NewburghHeightsOhMember" xlink:label="adc_NewburghHeightsOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NewburghHeightsOhMember" xlink:to="adc_NewburghHeightsOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NewburghHeightsOhMember_lbl" xml:lang="en-US">Newburgh Heights, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WarrensvilleHeightsOhMember" xlink:label="adc_WarrensvilleHeightsOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WarrensvilleHeightsOhMember" xlink:to="adc_WarrensvilleHeightsOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WarrensvilleHeightsOhMember_lbl" xml:lang="en-US">Warrensville Heights, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HeathOhMember" xlink:label="adc_HeathOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HeathOhMember" xlink:to="adc_HeathOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HeathOhMember_lbl" xml:lang="en-US">Heath, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LimaOhMember" xlink:label="adc_LimaOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LimaOhMember" xlink:to="adc_LimaOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LimaOhMember_lbl" xml:lang="en-US">Lima, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ElkCityOkMember" xlink:label="adc_ElkCityOkMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ElkCityOkMember" xlink:to="adc_ElkCityOkMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ElkCityOkMember_lbl" xml:lang="en-US">Elk City, OK [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SalemOrMember" xlink:label="adc_SalemOrMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SalemOrMember" xlink:to="adc_SalemOrMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SalemOrMember_lbl" xml:lang="en-US">Salem, OR [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WestfieldPaMember" xlink:label="adc_WestfieldPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WestfieldPaMember" xlink:to="adc_WestfieldPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WestfieldPaMember_lbl" xml:lang="en-US">Westfield, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AltoonaPaMember" xlink:label="adc_AltoonaPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AltoonaPaMember" xlink:to="adc_AltoonaPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AltoonaPaMember_lbl" xml:lang="en-US">Altoona, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GrindstonePaMember" xlink:label="adc_GrindstonePaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GrindstonePaMember" xlink:to="adc_GrindstonePaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GrindstonePaMember_lbl" xml:lang="en-US">Grindstone, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LibertyScMember" xlink:label="adc_LibertyScMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LibertyScMember" xlink:to="adc_LibertyScMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LibertyScMember_lbl" xml:lang="en-US">Liberty, SC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BlacksburgScMember" xlink:label="adc_BlacksburgScMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BlacksburgScMember" xlink:to="adc_BlacksburgScMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BlacksburgScMember_lbl" xml:lang="en-US">Blacksburg, SC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EasleySc1Member" xlink:label="adc_EasleySc1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EasleySc1Member" xlink:to="adc_EasleySc1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EasleySc1Member_lbl" xml:lang="en-US">Easley, SC1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FountainInnScMember" xlink:label="adc_FountainInnScMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FountainInnScMember" xlink:to="adc_FountainInnScMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FountainInnScMember_lbl" xml:lang="en-US">Fountain Inn, SC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WalterboroScMember" xlink:label="adc_WalterboroScMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WalterboroScMember" xlink:to="adc_WalterboroScMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WalterboroScMember_lbl" xml:lang="en-US">Walterboro, SC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JacksonTnMember" xlink:label="adc_JacksonTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JacksonTnMember" xlink:to="adc_JacksonTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JacksonTnMember_lbl" xml:lang="en-US">Jackson, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BrenhamTxMember" xlink:label="adc_BrenhamTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BrenhamTxMember" xlink:to="adc_BrenhamTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BrenhamTxMember_lbl" xml:lang="en-US">Brenham, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CorpusChristiTxMember" xlink:label="adc_CorpusChristiTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CorpusChristiTxMember" xlink:to="adc_CorpusChristiTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CorpusChristiTxMember_lbl" xml:lang="en-US">Corpus Christi, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HarlingenTx1Member" xlink:label="adc_HarlingenTx1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HarlingenTx1Member" xlink:to="adc_HarlingenTx1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HarlingenTx1Member_lbl" xml:lang="en-US">Harlingen, TX1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MidlandTxMember" xlink:label="adc_MidlandTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MidlandTxMember" xlink:to="adc_MidlandTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MidlandTxMember_lbl" xml:lang="en-US">Midland, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RockwallTxMember" xlink:label="adc_RockwallTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RockwallTxMember" xlink:to="adc_RockwallTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RockwallTxMember_lbl" xml:lang="en-US">Rockwall, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PrincetonWvMember" xlink:label="adc_PrincetonWvMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PrincetonWvMember" xlink:to="adc_PrincetonWvMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PrincetonWvMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PrincetonWvMember_lbl" xml:lang="en-US">Princeton, WV [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MartinsburgWvMember" xlink:label="adc_MartinsburgWvMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MartinsburgWvMember" xlink:to="adc_MartinsburgWvMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MartinsburgWvMember_lbl" xml:lang="en-US">Martinsburg, WV [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GrandChuteWiMember" xlink:label="adc_GrandChuteWiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GrandChuteWiMember" xlink:to="adc_GrandChuteWiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GrandChuteWiMember_lbl" xml:lang="en-US">Grand Chute, WI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NewRichmondWiMember" xlink:label="adc_NewRichmondWiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NewRichmondWiMember" xlink:to="adc_NewRichmondWiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NewRichmondWiMember_lbl" xml:lang="en-US">New Richmond, WI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BarabooWiMember" xlink:label="adc_BarabooWiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BarabooWiMember" xlink:to="adc_BarabooWiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BarabooWiMember_lbl" xml:lang="en-US">Baraboo, WI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DecaturAlMember" xlink:label="adc_DecaturAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DecaturAlMember" xlink:to="adc_DecaturAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DecaturAlMember_lbl" xml:lang="en-US">Decatur, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GreenvilleAlMember" xlink:label="adc_GreenvilleAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GreenvilleAlMember" xlink:to="adc_GreenvilleAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GreenvilleAlMember_lbl" xml:lang="en-US">Greenville, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BullheadCityAzMember" xlink:label="adc_BullheadCityAzMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BullheadCityAzMember" xlink:to="adc_BullheadCityAzMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BullheadCityAzMember_lbl" xml:lang="en-US">Bullhead City, AZ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PageAzMember" xlink:label="adc_PageAzMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PageAzMember" xlink:to="adc_PageAzMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PageAzMember_lbl" xml:lang="en-US">Page, AZ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SaffordAzMember" xlink:label="adc_SaffordAzMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SaffordAzMember" xlink:to="adc_SaffordAzMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SaffordAzMember_lbl" xml:lang="en-US">Safford, AZ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TucsonAzMember" xlink:label="adc_TucsonAzMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TucsonAzMember" xlink:to="adc_TucsonAzMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TucsonAzMember_lbl" xml:lang="en-US">Tucson, AZ [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TucsonAzMember_lbl" xml:lang="en-US">Tucson, AZ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BentonvilleArMember" xlink:label="adc_BentonvilleArMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BentonvilleArMember" xlink:to="adc_BentonvilleArMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BentonvilleArMember_lbl" xml:lang="en-US">Bentonville, AR [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BentonvilleAr1Member" xlink:label="adc_BentonvilleAr1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BentonvilleAr1Member" xlink:to="adc_BentonvilleAr1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BentonvilleAr1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BentonvilleAr1Member_lbl" xml:lang="en-US">Bentonville, AR1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SunnyvaleCaMember" xlink:label="adc_SunnyvaleCaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SunnyvaleCaMember" xlink:to="adc_SunnyvaleCaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SunnyvaleCaMember_lbl" xml:lang="en-US">Sunnyvale, CA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WhittierCaMember" xlink:label="adc_WhittierCaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WhittierCaMember" xlink:to="adc_WhittierCaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WhittierCaMember_lbl" xml:lang="en-US">Whittier, CA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AuroraCo2Member" xlink:label="adc_AuroraCo2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AuroraCo2Member" xlink:to="adc_AuroraCo2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AuroraCo2Member_lbl" xml:lang="en-US">Aurora, CO 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AuroraCo3Member" xlink:label="adc_AuroraCo3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AuroraCo3Member" xlink:to="adc_AuroraCo3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AuroraCo3Member_lbl" xml:lang="en-US">Aurora, CO 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EvergreenCoMember" xlink:label="adc_EvergreenCoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EvergreenCoMember" xlink:to="adc_EvergreenCoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EvergreenCoMember_lbl" xml:lang="en-US">Evergreen, CO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LakelandFlMember" xlink:label="adc_LakelandFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LakelandFlMember" xlink:to="adc_LakelandFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LakelandFlMember_lbl" xml:lang="en-US">Lakeland, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MtDoraFlMember" xlink:label="adc_MtDoraFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MtDoraFlMember" xlink:to="adc_MtDoraFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MtDoraFlMember_lbl" xml:lang="en-US">Mt Dora, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NorthMiamiBeachFlMember" xlink:label="adc_NorthMiamiBeachFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NorthMiamiBeachFlMember" xlink:to="adc_NorthMiamiBeachFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NorthMiamiBeachFlMember_lbl" xml:lang="en-US">North Miami Beach, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OrlandoFlMember" xlink:label="adc_OrlandoFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OrlandoFlMember" xlink:to="adc_OrlandoFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OrlandoFlMember_lbl" xml:lang="en-US">Orlando, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PortOrangeFlMember" xlink:label="adc_PortOrangeFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PortOrangeFlMember" xlink:to="adc_PortOrangeFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PortOrangeFlMember_lbl" xml:lang="en-US">Port Orange, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RoyalPalmBeachFlMember" xlink:label="adc_RoyalPalmBeachFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RoyalPalmBeachFlMember" xlink:to="adc_RoyalPalmBeachFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RoyalPalmBeachFlMember_lbl" xml:lang="en-US">Royal Palm Beach, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SarasotaFlMember" xlink:label="adc_SarasotaFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SarasotaFlMember" xlink:to="adc_SarasotaFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SarasotaFlMember_lbl" xml:lang="en-US">Sarasota, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_VeniceFl2Member" xlink:label="adc_VeniceFl2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_VeniceFl2Member" xlink:to="adc_VeniceFl2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_VeniceFl2Member_lbl" xml:lang="en-US">Venice, FL 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_VeroBeachFlMember" xlink:label="adc_VeroBeachFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_VeroBeachFlMember" xlink:to="adc_VeroBeachFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_VeroBeachFlMember_lbl" xml:lang="en-US">Vero Beach, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DaltonGaMember" xlink:label="adc_DaltonGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DaltonGaMember" xlink:to="adc_DaltonGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DaltonGaMember_lbl" xml:lang="en-US">Dalton, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CrystalLakeIlMember" xlink:label="adc_CrystalLakeIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CrystalLakeIlMember" xlink:to="adc_CrystalLakeIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CrystalLakeIlMember_lbl" xml:lang="en-US">Crystal Lake, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GlenwoodIlMember" xlink:label="adc_GlenwoodIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GlenwoodIlMember" xlink:to="adc_GlenwoodIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GlenwoodIlMember_lbl" xml:lang="en-US">Glenwood, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MorrisIlMember" xlink:label="adc_MorrisIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MorrisIlMember" xlink:to="adc_MorrisIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MorrisIlMember_lbl" xml:lang="en-US">Morris, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BicknellInMember" xlink:label="adc_BicknellInMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BicknellInMember" xlink:to="adc_BicknellInMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BicknellInMember_lbl" xml:lang="en-US">Bicknell, IN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FortWayneInMember" xlink:label="adc_FortWayneInMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FortWayneInMember" xlink:to="adc_FortWayneInMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FortWayneInMember_lbl" xml:lang="en-US">Fort Wayne, IN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_IndianapolisIn3Member" xlink:label="adc_IndianapolisIn3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_IndianapolisIn3Member" xlink:to="adc_IndianapolisIn3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_IndianapolisIn3Member_lbl" xml:lang="en-US">Indianapolis, IN 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DesMoinesIaMember" xlink:label="adc_DesMoinesIaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DesMoinesIaMember" xlink:to="adc_DesMoinesIaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DesMoinesIaMember_lbl" xml:lang="en-US">Des Moines, IA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FrankfortKyMember" xlink:label="adc_FrankfortKyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FrankfortKyMember" xlink:to="adc_FrankfortKyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FrankfortKyMember_lbl" xml:lang="en-US">Frankfort, KY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DeridderLaMember" xlink:label="adc_DeridderLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DeridderLaMember" xlink:to="adc_DeridderLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DeridderLaMember_lbl" xml:lang="en-US">DeRidder, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LakeCharlesLaMember" xlink:label="adc_LakeCharlesLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LakeCharlesLaMember" xlink:to="adc_LakeCharlesLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LakeCharlesLaMember_lbl" xml:lang="en-US">Lake Charles, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LakeCharlesLa1Member" xlink:label="adc_LakeCharlesLa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LakeCharlesLa1Member" xlink:to="adc_LakeCharlesLa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LakeCharlesLa1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LakeCharlesLa1Member_lbl" xml:lang="en-US">Lake Charles, LA 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ShreveportLaMember" xlink:label="adc_ShreveportLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ShreveportLaMember" xlink:to="adc_ShreveportLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ShreveportLaMember_lbl" xml:lang="en-US">Shreveport, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MarshallMiMember" xlink:label="adc_MarshallMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MarshallMiMember" xlink:to="adc_MarshallMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MarshallMiMember_lbl" xml:lang="en-US">Marshall, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MtPleasantMi2Member" xlink:label="adc_MtPleasantMi2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MtPleasantMi2Member" xlink:to="adc_MtPleasantMi2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MtPleasantMi2Member_lbl" xml:lang="en-US">Mt Pleasant, MI 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NortonShoresMiMember" xlink:label="adc_NortonShoresMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NortonShoresMiMember" xlink:to="adc_NortonShoresMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NortonShoresMiMember_lbl" xml:lang="en-US">Norton Shores, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PortageMiMember" xlink:label="adc_PortageMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PortageMiMember" xlink:to="adc_PortageMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PortageMiMember_lbl" xml:lang="en-US">Portage, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_StephensonMiMember" xlink:label="adc_StephensonMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_StephensonMiMember" xlink:to="adc_StephensonMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_StephensonMiMember_lbl" xml:lang="en-US">Stephenson, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SterlingMiMember" xlink:label="adc_SterlingMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SterlingMiMember" xlink:to="adc_SterlingMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SterlingMiMember_lbl" xml:lang="en-US">Sterling, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EagleBendMnMember" xlink:label="adc_EagleBendMnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EagleBendMnMember" xlink:to="adc_EagleBendMnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EagleBendMnMember_lbl" xml:lang="en-US">Eagle Bend, MN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BrandonMsMember" xlink:label="adc_BrandonMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BrandonMsMember" xlink:to="adc_BrandonMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BrandonMsMember_lbl" xml:lang="en-US">Brandon, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ClintonMsMember" xlink:label="adc_ClintonMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ClintonMsMember" xlink:to="adc_ClintonMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ClintonMsMember_lbl" xml:lang="en-US">Clinton, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ColumbusMsMember" xlink:label="adc_ColumbusMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ColumbusMsMember" xlink:to="adc_ColumbusMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ColumbusMsMember_lbl" xml:lang="en-US">Columbus, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HollySpringsMsMember" xlink:label="adc_HollySpringsMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HollySpringsMsMember" xlink:to="adc_HollySpringsMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HollySpringsMsMember_lbl" xml:lang="en-US">Holly Springs, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JacksonMs2Member" xlink:label="adc_JacksonMs2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JacksonMs2Member" xlink:to="adc_JacksonMs2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JacksonMs2Member_lbl" xml:lang="en-US">Jackson, MS 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JacksonMs3Member" xlink:label="adc_JacksonMs3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JacksonMs3Member" xlink:to="adc_JacksonMs3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JacksonMs3Member_lbl" xml:lang="en-US">Jackson, MS 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MeridianMsMember" xlink:label="adc_MeridianMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MeridianMsMember" xlink:to="adc_MeridianMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MeridianMsMember_lbl" xml:lang="en-US">Meridian, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PearlMsMember" xlink:label="adc_PearlMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PearlMsMember" xlink:to="adc_PearlMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PearlMsMember_lbl" xml:lang="en-US">Pearl, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RidgelandMsMember" xlink:label="adc_RidgelandMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RidgelandMsMember" xlink:to="adc_RidgelandMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RidgelandMsMember_lbl" xml:lang="en-US">Ridgeland, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BowlingGreenMoMember" xlink:label="adc_BowlingGreenMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BowlingGreenMoMember" xlink:to="adc_BowlingGreenMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BowlingGreenMoMember_lbl" xml:lang="en-US">Bowling Green, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_StRobertMoMember" xlink:label="adc_StRobertMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_StRobertMoMember" xlink:to="adc_StRobertMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_StRobertMoMember_lbl" xml:lang="en-US">St Robert, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BeattyNvMember" xlink:label="adc_BeattyNvMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BeattyNvMember" xlink:to="adc_BeattyNvMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BeattyNvMember_lbl" xml:lang="en-US">Beatty, NV [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AlamogordoNmMember" xlink:label="adc_AlamogordoNmMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AlamogordoNmMember" xlink:to="adc_AlamogordoNmMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AlamogordoNmMember_lbl" xml:lang="en-US">Alamogordo, NM [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AlamogordoNm2Member" xlink:label="adc_AlamogordoNm2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AlamogordoNm2Member" xlink:to="adc_AlamogordoNm2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AlamogordoNm2Member_lbl" xml:lang="en-US">Alamogordo, NM 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AlcaldeNmMember" xlink:label="adc_AlcaldeNmMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AlcaldeNmMember" xlink:to="adc_AlcaldeNmMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AlcaldeNmMember_lbl" xml:lang="en-US">Alcalde, NM [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CimarronNmMember" xlink:label="adc_CimarronNmMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CimarronNmMember" xlink:to="adc_CimarronNmMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CimarronNmMember_lbl" xml:lang="en-US">Cimarron, NM [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LaLuzNmMember" xlink:label="adc_LaLuzNmMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LaLuzNmMember" xlink:to="adc_LaLuzNmMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LaLuzNmMember_lbl" xml:lang="en-US">La Luz, NM [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FayettevilleNcMember" xlink:label="adc_FayettevilleNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FayettevilleNcMember" xlink:to="adc_FayettevilleNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FayettevilleNcMember_lbl" xml:lang="en-US">Fayetteville, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GastoniaNcMember" xlink:label="adc_GastoniaNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GastoniaNcMember" xlink:to="adc_GastoniaNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GastoniaNcMember_lbl" xml:lang="en-US">Gastonia, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DevilsLakeNdMember" xlink:label="adc_DevilsLakeNdMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DevilsLakeNdMember" xlink:to="adc_DevilsLakeNdMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DevilsLakeNdMember_lbl" xml:lang="en-US">Devils Lake, ND [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CambridgeOhMember" xlink:label="adc_CambridgeOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CambridgeOhMember" xlink:to="adc_CambridgeOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CambridgeOhMember_lbl" xml:lang="en-US">Cambridge, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ColumbusOh2Member" xlink:label="adc_ColumbusOh2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ColumbusOh2Member" xlink:to="adc_ColumbusOh2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ColumbusOh2Member_lbl" xml:lang="en-US">Columbus, OH 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GroveCityOhMember" xlink:label="adc_GroveCityOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GroveCityOhMember" xlink:to="adc_GroveCityOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GroveCityOhMember_lbl" xml:lang="en-US">Grove City, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LorainOh2Member" xlink:label="adc_LorainOh2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LorainOh2Member" xlink:to="adc_LorainOh2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LorainOh2Member_lbl" xml:lang="en-US">Lorain, OH 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ReynoldsburgOhMember" xlink:label="adc_ReynoldsburgOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ReynoldsburgOhMember" xlink:to="adc_ReynoldsburgOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ReynoldsburgOhMember_lbl" xml:lang="en-US">Reynoldsburg, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SpringfieldOhMember" xlink:label="adc_SpringfieldOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SpringfieldOhMember" xlink:to="adc_SpringfieldOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SpringfieldOhMember_lbl" xml:lang="en-US">Springfield, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ArdmoreOkMember" xlink:label="adc_ArdmoreOkMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ArdmoreOkMember" xlink:to="adc_ArdmoreOkMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ArdmoreOkMember_lbl" xml:lang="en-US">Ardmore, OK [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DillonScMember" xlink:label="adc_DillonScMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DillonScMember" xlink:to="adc_DillonScMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DillonScMember_lbl" xml:lang="en-US">Dillon, SC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JasperTnMember" xlink:label="adc_JasperTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JasperTnMember" xlink:to="adc_JasperTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JasperTnMember_lbl" xml:lang="en-US">Jasper, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CarthageTxMember" xlink:label="adc_CarthageTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CarthageTxMember" xlink:to="adc_CarthageTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CarthageTxMember_lbl" xml:lang="en-US">Carthage, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CedarParkTxMember" xlink:label="adc_CedarParkTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CedarParkTxMember" xlink:to="adc_CedarParkTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CedarParkTxMember_lbl" xml:lang="en-US">Cedar Park, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GranburyTxMember" xlink:label="adc_GranburyTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GranburyTxMember" xlink:to="adc_GranburyTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GranburyTxMember_lbl" xml:lang="en-US">Granbury, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HemphillTxMember" xlink:label="adc_HemphillTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HemphillTxMember" xlink:to="adc_HemphillTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HemphillTxMember_lbl" xml:lang="en-US">Hemphill, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LampasasTxMember" xlink:label="adc_LampasasTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LampasasTxMember" xlink:to="adc_LampasasTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LampasasTxMember_lbl" xml:lang="en-US">Lampasas, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LubbockTxMember" xlink:label="adc_LubbockTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LubbockTxMember" xlink:to="adc_LubbockTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LubbockTxMember_lbl" xml:lang="en-US">Lubbock, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OdessaTxMember" xlink:label="adc_OdessaTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OdessaTxMember" xlink:to="adc_OdessaTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OdessaTxMember_lbl" xml:lang="en-US">Odessa, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PortArthurTxMember" xlink:label="adc_PortArthurTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PortArthurTxMember" xlink:to="adc_PortArthurTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PortArthurTxMember_lbl" xml:lang="en-US">Port Arthur, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ProvoUtMember" xlink:label="adc_ProvoUtMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ProvoUtMember" xlink:to="adc_ProvoUtMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ProvoUtMember_lbl" xml:lang="en-US">Provo, UT [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TappahannockVaMember" xlink:label="adc_TappahannockVaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TappahannockVaMember" xlink:to="adc_TappahannockVaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TappahannockVaMember_lbl" xml:lang="en-US">Tappahannock, VA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ManitowocWiMember" xlink:label="adc_ManitowocWiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ManitowocWiMember" xlink:to="adc_ManitowocWiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ManitowocWiMember_lbl" xml:lang="en-US">Manitowoc, WI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OakCreekWiMember" xlink:label="adc_OakCreekWiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OakCreekWiMember" xlink:to="adc_OakCreekWiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OakCreekWiMember_lbl" xml:lang="en-US">Oak Creek, WI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OxfordAlMember" xlink:label="adc_OxfordAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OxfordAlMember" xlink:to="adc_OxfordAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OxfordAlMember_lbl" xml:lang="en-US">Oxford, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OxfordAl1Member" xlink:label="adc_OxfordAl1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OxfordAl1Member" xlink:to="adc_OxfordAl1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OxfordAl1Member_lbl" xml:lang="en-US">Oxford, AL 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OxfordAl2Member" xlink:label="adc_OxfordAl2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OxfordAl2Member" xlink:to="adc_OxfordAl2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OxfordAl2Member_lbl" xml:lang="en-US">Oxford, AL 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JonesboroArMember" xlink:label="adc_JonesboroArMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JonesboroArMember" xlink:to="adc_JonesboroArMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JonesboroArMember_lbl" xml:lang="en-US">Jonesboro, AR [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JonesboroAr2Member" xlink:label="adc_JonesboroAr2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JonesboroAr2Member" xlink:to="adc_JonesboroAr2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_JonesboroAr2Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JonesboroAr2Member_lbl" xml:lang="en-US">Jonesboro, AR 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LowellArMember" xlink:label="adc_LowellArMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LowellArMember" xlink:to="adc_LowellArMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LowellArMember_lbl" xml:lang="en-US">Lowell, AR [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SouthingtonCtMember" xlink:label="adc_SouthingtonCtMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SouthingtonCtMember" xlink:to="adc_SouthingtonCtMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SouthingtonCtMember_lbl" xml:lang="en-US">Southington, CT [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MillsboroDeMember" xlink:label="adc_MillsboroDeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MillsboroDeMember" xlink:to="adc_MillsboroDeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MillsboroDeMember_lbl" xml:lang="en-US">Millsboro, DE [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JacksonvilleFl1Member" xlink:label="adc_JacksonvilleFl1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JacksonvilleFl1Member" xlink:to="adc_JacksonvilleFl1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_JacksonvilleFl1Member_lbl" xml:lang="en-US">Jacksonville, FL 1 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JacksonvilleFl1Member_lbl" xml:lang="en-US">Jacksonville, FL 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OrangeParkFl1Member" xlink:label="adc_OrangeParkFl1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OrangeParkFl1Member" xlink:to="adc_OrangeParkFl1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OrangeParkFl1Member_lbl" xml:lang="en-US">Orange Park, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PortRicheyFlMember" xlink:label="adc_PortRicheyFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PortRicheyFlMember" xlink:to="adc_PortRicheyFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PortRicheyFlMember_lbl" xml:lang="en-US">Port Richey, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AmericusGaMember" xlink:label="adc_AmericusGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AmericusGaMember" xlink:to="adc_AmericusGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AmericusGaMember_lbl" xml:lang="en-US">Americus, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BrunswickGaMember" xlink:label="adc_BrunswickGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BrunswickGaMember" xlink:to="adc_BrunswickGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BrunswickGaMember_lbl" xml:lang="en-US">Brunswick, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BrunswickGa1Member" xlink:label="adc_BrunswickGa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BrunswickGa1Member" xlink:to="adc_BrunswickGa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BrunswickGa1Member_lbl" xml:lang="en-US">Brunswick, GA 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BufordGaMember" xlink:label="adc_BufordGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BufordGaMember" xlink:to="adc_BufordGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BufordGaMember_lbl" xml:lang="en-US">Buford, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CarrolltonGaMember" xlink:label="adc_CarrolltonGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CarrolltonGaMember" xlink:to="adc_CarrolltonGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CarrolltonGaMember_lbl" xml:lang="en-US">Carrollton, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DecaturGaMember" xlink:label="adc_DecaturGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DecaturGaMember" xlink:to="adc_DecaturGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DecaturGaMember_lbl" xml:lang="en-US">Decatur, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MetterGaMember" xlink:label="adc_MetterGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MetterGaMember" xlink:to="adc_MetterGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MetterGaMember_lbl" xml:lang="en-US">Metter, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_VillaRicaGaMember" xlink:label="adc_VillaRicaGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_VillaRicaGaMember" xlink:to="adc_VillaRicaGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_VillaRicaGaMember_lbl" xml:lang="en-US">Villa Rica, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChicagoIl1Member" xlink:label="adc_ChicagoIl1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChicagoIl1Member" xlink:to="adc_ChicagoIl1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChicagoIl1Member_lbl" xml:lang="en-US">Chicago, IL 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChicagoIl2Member" xlink:label="adc_ChicagoIl2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChicagoIl2Member" xlink:to="adc_ChicagoIl2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChicagoIl2Member_lbl" xml:lang="en-US">Chicago, IL 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GalesburgIlMember" xlink:label="adc_GalesburgIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GalesburgIlMember" xlink:to="adc_GalesburgIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GalesburgIlMember_lbl" xml:lang="en-US">Galesburg, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MundeleinIlMember" xlink:label="adc_MundeleinIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MundeleinIlMember" xlink:to="adc_MundeleinIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MundeleinIlMember_lbl" xml:lang="en-US">Mundelein, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MundeleinIl1Member" xlink:label="adc_MundeleinIl1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MundeleinIl1Member" xlink:to="adc_MundeleinIl1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MundeleinIl1Member_lbl" xml:lang="en-US">Mundelein, IL 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MundeleinIl2Member" xlink:label="adc_MundeleinIl2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MundeleinIl2Member" xlink:to="adc_MundeleinIl2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MundeleinIl2Member_lbl" xml:lang="en-US">Mundelein, IL 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SpringfieldIl2Member" xlink:label="adc_SpringfieldIl2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SpringfieldIl2Member" xlink:to="adc_SpringfieldIl2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SpringfieldIl2Member_lbl" xml:lang="en-US">Springfield, IL 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WoodstockIlMember" xlink:label="adc_WoodstockIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WoodstockIlMember" xlink:to="adc_WoodstockIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WoodstockIlMember_lbl" xml:lang="en-US">Woodstock, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FrankfortInMember" xlink:label="adc_FrankfortInMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FrankfortInMember" xlink:to="adc_FrankfortInMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FrankfortInMember_lbl" xml:lang="en-US">Frankfort, IN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_KokomoInMember" xlink:label="adc_KokomoInMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_KokomoInMember" xlink:to="adc_KokomoInMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_KokomoInMember_lbl" xml:lang="en-US">Kokomo, IN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_KokomoIn1Member" xlink:label="adc_KokomoIn1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_KokomoIn1Member" xlink:to="adc_KokomoIn1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_KokomoIn1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_KokomoIn1Member_lbl" xml:lang="en-US">Kokomo, IN 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NashvilleInMember" xlink:label="adc_NashvilleInMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NashvilleInMember" xlink:to="adc_NashvilleInMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NashvilleInMember_lbl" xml:lang="en-US">Nashville, IN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RoelandParkKsMember" xlink:label="adc_RoelandParkKsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RoelandParkKsMember" xlink:to="adc_RoelandParkKsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RoelandParkKsMember_lbl" xml:lang="en-US">Roeland Park, KS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GeorgetownKy1Member" xlink:label="adc_GeorgetownKy1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GeorgetownKy1Member" xlink:to="adc_GeorgetownKy1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GeorgetownKy1Member_lbl" xml:lang="en-US">Georgetown, KY 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HopkinsvilleKyMember" xlink:label="adc_HopkinsvilleKyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HopkinsvilleKyMember" xlink:to="adc_HopkinsvilleKyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HopkinsvilleKyMember_lbl" xml:lang="en-US">Hopkinsville, KY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SalyersvilleKyMember" xlink:label="adc_SalyersvilleKyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SalyersvilleKyMember" xlink:to="adc_SalyersvilleKyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SalyersvilleKyMember_lbl" xml:lang="en-US">Salyersville, KY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AmiteLaMember" xlink:label="adc_AmiteLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AmiteLaMember" xlink:to="adc_AmiteLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AmiteLaMember_lbl" xml:lang="en-US">Amite, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BossierCityLaMember" xlink:label="adc_BossierCityLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BossierCityLaMember" xlink:to="adc_BossierCityLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BossierCityLaMember_lbl" xml:lang="en-US">Bossier City, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_KennerLaMember" xlink:label="adc_KennerLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_KennerLaMember" xlink:to="adc_KennerLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_KennerLaMember_lbl" xml:lang="en-US">Kenner, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MandevilleLaMember" xlink:label="adc_MandevilleLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MandevilleLaMember" xlink:to="adc_MandevilleLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MandevilleLaMember_lbl" xml:lang="en-US">Mandeville, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NewOrleansLaMember" xlink:label="adc_NewOrleansLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NewOrleansLaMember" xlink:to="adc_NewOrleansLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NewOrleansLaMember_lbl" xml:lang="en-US">New Orleans, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BaltimoreMd1Member" xlink:label="adc_BaltimoreMd1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BaltimoreMd1Member" xlink:to="adc_BaltimoreMd1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BaltimoreMd1Member_lbl" xml:lang="en-US">Baltimore, MD 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CantonMi1Member" xlink:label="adc_CantonMi1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CantonMi1Member" xlink:to="adc_CantonMi1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CantonMi1Member_lbl" xml:lang="en-US">Canton, MI 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GrandRapidsMi1Member" xlink:label="adc_GrandRapidsMi1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GrandRapidsMi1Member" xlink:to="adc_GrandRapidsMi1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GrandRapidsMi1Member_lbl" xml:lang="en-US">Grand Rapids, MI 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BloomingtonMnMember" xlink:label="adc_BloomingtonMnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BloomingtonMnMember" xlink:to="adc_BloomingtonMnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BloomingtonMnMember_lbl" xml:lang="en-US">Bloomington, MN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MonticelloMnMember" xlink:label="adc_MonticelloMnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MonticelloMnMember" xlink:to="adc_MonticelloMnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MonticelloMnMember_lbl" xml:lang="en-US">Monticello, MN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MountainIronMnMember" xlink:label="adc_MountainIronMnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MountainIronMnMember" xlink:to="adc_MountainIronMnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MountainIronMnMember_lbl" xml:lang="en-US">Mountain Iron, MN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GulfportMsMember" xlink:label="adc_GulfportMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GulfportMsMember" xlink:to="adc_GulfportMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GulfportMsMember_lbl" xml:lang="en-US">Gulfport, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JacksonMs1Member" xlink:label="adc_JacksonMs1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JacksonMs1Member" xlink:to="adc_JacksonMs1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JacksonMs1Member_lbl" xml:lang="en-US">Jackson, MS 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MccombMsMember" xlink:label="adc_MccombMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MccombMsMember" xlink:to="adc_MccombMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MccombMsMember_lbl" xml:lang="en-US">McComb, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_KansasCityMoMember" xlink:label="adc_KansasCityMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_KansasCityMoMember" xlink:to="adc_KansasCityMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_KansasCityMoMember_lbl" xml:lang="en-US">Kansas City, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SpringfieldMoMember" xlink:label="adc_SpringfieldMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SpringfieldMoMember" xlink:to="adc_SpringfieldMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SpringfieldMoMember_lbl" xml:lang="en-US">Springfield, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_StCharlesMoMember" xlink:label="adc_StCharlesMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_StCharlesMoMember" xlink:to="adc_StCharlesMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_StCharlesMoMember_lbl" xml:lang="en-US">St. Charles, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_StPetersMoMember" xlink:label="adc_StPetersMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_StPetersMoMember" xlink:to="adc_StPetersMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_StPetersMoMember_lbl" xml:lang="en-US">St. Peters, MO 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BoulderCityNvMember" xlink:label="adc_BoulderCityNvMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BoulderCityNvMember" xlink:to="adc_BoulderCityNvMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BoulderCityNvMember_lbl" xml:lang="en-US">Boulder City, NV [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EggHarborNjMember" xlink:label="adc_EggHarborNjMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EggHarborNjMember" xlink:to="adc_EggHarborNjMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EggHarborNjMember_lbl" xml:lang="en-US">Egg Harbor, NJ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SecaucusNjMember" xlink:label="adc_SecaucusNjMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SecaucusNjMember" xlink:to="adc_SecaucusNjMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SecaucusNjMember_lbl" xml:lang="en-US">Secaucus, NJ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SewellNjMember" xlink:label="adc_SewellNjMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SewellNjMember" xlink:to="adc_SewellNjMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SewellNjMember_lbl" xml:lang="en-US">Sewell, NJ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SantaFeNmMember" xlink:label="adc_SantaFeNmMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SantaFeNmMember" xlink:to="adc_SantaFeNmMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SantaFeNmMember_lbl" xml:lang="en-US">Santa Fe, NM [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_StatesvilleNcMember" xlink:label="adc_StatesvilleNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_StatesvilleNcMember" xlink:to="adc_StatesvilleNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_StatesvilleNcMember_lbl" xml:lang="en-US">Statesville, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JacksonvilleNc1Member" xlink:label="adc_JacksonvilleNc1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JacksonvilleNc1Member" xlink:to="adc_JacksonvilleNc1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JacksonvilleNc1Member_lbl" xml:lang="en-US">Jacksonville, NC 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MinotNdMember" xlink:label="adc_MinotNdMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MinotNdMember" xlink:to="adc_MinotNdMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MinotNdMember_lbl" xml:lang="en-US">Minot, ND [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GrandviewHeightsOhMember" xlink:label="adc_GrandviewHeightsOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GrandviewHeightsOhMember" xlink:to="adc_GrandviewHeightsOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GrandviewHeightsOhMember_lbl" xml:lang="en-US">Grandview Heights, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HillardOhMember" xlink:label="adc_HillardOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HillardOhMember" xlink:to="adc_HillardOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HillardOhMember_lbl" xml:lang="en-US">Hillard, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EdmondOkMember" xlink:label="adc_EdmondOkMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EdmondOkMember" xlink:to="adc_EdmondOkMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EdmondOkMember_lbl" xml:lang="en-US">Edmond, OK [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OklahomaCityOkMember" xlink:label="adc_OklahomaCityOkMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OklahomaCityOkMember" xlink:to="adc_OklahomaCityOkMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OklahomaCityOkMember_lbl" xml:lang="en-US">Oklahoma City, OK [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EriePaMember" xlink:label="adc_EriePaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EriePaMember" xlink:to="adc_EriePaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EriePaMember_lbl" xml:lang="en-US">Erie, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PittsburghPaMember" xlink:label="adc_PittsburghPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PittsburghPaMember" xlink:to="adc_PittsburghPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PittsburghPaMember_lbl" xml:lang="en-US">Pittsburgh, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SumterScMember" xlink:label="adc_SumterScMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SumterScMember" xlink:to="adc_SumterScMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SumterScMember_lbl" xml:lang="en-US">Sumter, SC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChattanoogaTnMember" xlink:label="adc_ChattanoogaTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChattanoogaTnMember" xlink:to="adc_ChattanoogaTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChattanoogaTnMember_lbl" xml:lang="en-US">Chattanooga, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EtowahTnMember" xlink:label="adc_EtowahTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EtowahTnMember" xlink:to="adc_EtowahTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EtowahTnMember_lbl" xml:lang="en-US">Etowah, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MemphisTn1Member" xlink:label="adc_MemphisTn1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MemphisTn1Member" xlink:to="adc_MemphisTn1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MemphisTn1Member_lbl" xml:lang="en-US">Memphis, TN 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AlamoTxMember" xlink:label="adc_AlamoTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AlamoTxMember" xlink:to="adc_AlamoTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AlamoTxMember_lbl" xml:lang="en-US">Alamo, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AndrewsTxMember" xlink:label="adc_AndrewsTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AndrewsTxMember" xlink:to="adc_AndrewsTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AndrewsTxMember_lbl" xml:lang="en-US">Andrews, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ArlingtonTx1Member" xlink:label="adc_ArlingtonTx1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ArlingtonTx1Member" xlink:to="adc_ArlingtonTx1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ArlingtonTx1Member_lbl" xml:lang="en-US">Arlington, TX 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CanyonLakeTxMember" xlink:label="adc_CanyonLakeTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CanyonLakeTxMember" xlink:to="adc_CanyonLakeTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CanyonLakeTxMember_lbl" xml:lang="en-US">Canyon Lake, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CorpusChristiTx1Member" xlink:label="adc_CorpusChristiTx1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CorpusChristiTx1Member" xlink:to="adc_CorpusChristiTx1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CorpusChristiTx1Member_lbl" xml:lang="en-US">Corpus Christi, TX 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FortStocktonTxMember" xlink:label="adc_FortStocktonTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FortStocktonTxMember" xlink:to="adc_FortStocktonTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FortStocktonTxMember_lbl" xml:lang="en-US">Fort Stockton, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FortWorthTx1Member" xlink:label="adc_FortWorthTx1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FortWorthTx1Member" xlink:to="adc_FortWorthTx1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FortWorthTx1Member_lbl" xml:lang="en-US">Fort Worth, TX 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LufkinTxMember" xlink:label="adc_LufkinTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LufkinTxMember" xlink:to="adc_LufkinTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LufkinTxMember_lbl" xml:lang="en-US">Lufkin, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NewportNewsVaMember" xlink:label="adc_NewportNewsVaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NewportNewsVaMember" xlink:to="adc_NewportNewsVaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NewportNewsVaMember_lbl" xml:lang="en-US">Newport News, VA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AppletonWiMember" xlink:label="adc_AppletonWiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AppletonWiMember" xlink:to="adc_AppletonWiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AppletonWiMember_lbl" xml:lang="en-US">Appleton, WI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OnalaskaWiMember" xlink:label="adc_OnalaskaWiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OnalaskaWiMember" xlink:to="adc_OnalaskaWiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OnalaskaWiMember_lbl" xml:lang="en-US">Onalaska, WI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AthensAlMember" xlink:label="adc_AthensAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AthensAlMember" xlink:to="adc_AthensAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AthensAlMember_lbl" xml:lang="en-US">N/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AthensAlMember_lbl" xml:lang="en-US">Athens, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AthensAl1Member" xlink:label="adc_AthensAl1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AthensAl1Member" xlink:to="adc_AthensAl1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AthensAl1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AthensAl1Member_lbl" xml:lang="en-US">Athens AL 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AttalaAlMember" xlink:label="adc_AttalaAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AttalaAlMember" xlink:to="adc_AttalaAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AttalaAlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AttalaAlMember_lbl" xml:lang="en-US">Attala, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BirminghamAl1Member" xlink:label="adc_BirminghamAl1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BirminghamAl1Member" xlink:to="adc_BirminghamAl1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BirminghamAl1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BirminghamAl1Member_lbl" xml:lang="en-US">Birmingham AL 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BirminghamAl5Member" xlink:label="adc_BirminghamAl5Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BirminghamAl5Member" xlink:to="adc_BirminghamAl5Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BirminghamAl5Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BirminghamAl5Member_lbl" xml:lang="en-US">Birmingham, AL 5 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BlountsvilleAlMember" xlink:label="adc_BlountsvilleAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BlountsvilleAlMember" xlink:to="adc_BlountsvilleAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BlountsvilleAlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BlountsvilleAlMember_lbl" xml:lang="en-US">Blountsville, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CoffeevilleAlMember" xlink:label="adc_CoffeevilleAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CoffeevilleAlMember" xlink:to="adc_CoffeevilleAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CoffeevilleAlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CoffeevilleAlMember_lbl" xml:lang="en-US">Coffeeville, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PhenixAlMember" xlink:label="adc_PhenixAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PhenixAlMember" xlink:to="adc_PhenixAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PhenixAlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PhenixAlMember_lbl" xml:lang="en-US">Phenix, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SilasAlMember" xlink:label="adc_SilasAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SilasAlMember" xlink:to="adc_SilasAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SilasAlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SilasAlMember_lbl" xml:lang="en-US">Silas, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TubaCityAzMember" xlink:label="adc_TubaCityAzMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TubaCityAzMember" xlink:to="adc_TubaCityAzMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TubaCityAzMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TubaCityAzMember_lbl" xml:lang="en-US">Tuba City, AZ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SearcyArMember" xlink:label="adc_SearcyArMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SearcyArMember" xlink:to="adc_SearcyArMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SearcyArMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SearcyArMember_lbl" xml:lang="en-US">Searcy, AR [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SheridanArMember" xlink:label="adc_SheridanArMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SheridanArMember" xlink:to="adc_SheridanArMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SheridanArMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SheridanArMember_lbl" xml:lang="en-US">Sheridan, AR [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TrumannArMember" xlink:label="adc_TrumannArMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TrumannArMember" xlink:to="adc_TrumannArMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TrumannArMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TrumannArMember_lbl" xml:lang="en-US">Trumann, AR [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_VisaliaCaMember" xlink:label="adc_VisaliaCaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_VisaliaCaMember" xlink:to="adc_VisaliaCaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_VisaliaCaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_VisaliaCaMember_lbl" xml:lang="en-US">Visalia, CA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LakewoodCoMember" xlink:label="adc_LakewoodCoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LakewoodCoMember" xlink:to="adc_LakewoodCoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LakewoodCoMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LakewoodCoMember_lbl" xml:lang="en-US">Lakewood, CO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RifleCoMember" xlink:label="adc_RifleCoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RifleCoMember" xlink:to="adc_RifleCoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RifleCoMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RifleCoMember_lbl" xml:lang="en-US">Rifle, CO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DanburyCtMember" xlink:label="adc_DanburyCtMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DanburyCtMember" xlink:to="adc_DanburyCtMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DanburyCtMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DanburyCtMember_lbl" xml:lang="en-US">Danbury, CT [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GreenwichCtMember" xlink:label="adc_GreenwichCtMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GreenwichCtMember" xlink:to="adc_GreenwichCtMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GreenwichCtMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GreenwichCtMember_lbl" xml:lang="en-US">Greenwich, CT [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OrangeCtMember" xlink:label="adc_OrangeCtMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OrangeCtMember" xlink:to="adc_OrangeCtMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OrangeCtMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OrangeCtMember_lbl" xml:lang="en-US">Orange, CT [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OrangeCt1Member" xlink:label="adc_OrangeCt1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OrangeCt1Member" xlink:to="adc_OrangeCt1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OrangeCt1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OrangeCt1Member_lbl" xml:lang="en-US">Orange, CT 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TorringtonCtMember" xlink:label="adc_TorringtonCtMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TorringtonCtMember" xlink:to="adc_TorringtonCtMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TorringtonCtMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TorringtonCtMember_lbl" xml:lang="en-US">Torrington, CT [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BearDeMember" xlink:label="adc_BearDeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BearDeMember" xlink:to="adc_BearDeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BearDeMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BearDeMember_lbl" xml:lang="en-US">Bear, DE [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WilmingtonDeMember" xlink:label="adc_WilmingtonDeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WilmingtonDeMember" xlink:to="adc_WilmingtonDeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WilmingtonDeMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WilmingtonDeMember_lbl" xml:lang="en-US">Wilmington, DE [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ApopkaFl3Member" xlink:label="adc_ApopkaFl3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ApopkaFl3Member" xlink:to="adc_ApopkaFl3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ApopkaFl3Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ApopkaFl3Member_lbl" xml:lang="en-US">Apopka, FL 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ClearwaterFlMember" xlink:label="adc_ClearwaterFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ClearwaterFlMember" xlink:to="adc_ClearwaterFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ClearwaterFlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ClearwaterFlMember_lbl" xml:lang="en-US">Clearwater, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CocoaFlMember" xlink:label="adc_CocoaFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CocoaFlMember" xlink:to="adc_CocoaFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CocoaFlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CocoaFlMember_lbl" xml:lang="en-US">Cocoa, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MerrittIslandFl3Member" xlink:label="adc_MerrittIslandFl3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MerrittIslandFl3Member" xlink:to="adc_MerrittIslandFl3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MerrittIslandFl3Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MerrittIslandFl3Member_lbl" xml:lang="en-US">Merritt Island, FL 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OrlandoFl3Member" xlink:label="adc_OrlandoFl3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OrlandoFl3Member" xlink:to="adc_OrlandoFl3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OrlandoFl3Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OrlandoFl3Member_lbl" xml:lang="en-US">Orlando, FL3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LakePlacidFlMember" xlink:label="adc_LakePlacidFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LakePlacidFlMember" xlink:to="adc_LakePlacidFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LakePlacidFlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LakePlacidFlMember_lbl" xml:lang="en-US">Lake Placid, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PoincianaFlMember" xlink:label="adc_PoincianaFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PoincianaFlMember" xlink:to="adc_PoincianaFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PoincianaFlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PoincianaFlMember_lbl" xml:lang="en-US">Poinciana, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SanfordFlMember" xlink:label="adc_SanfordFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SanfordFlMember" xlink:to="adc_SanfordFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SanfordFlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SanfordFlMember_lbl" xml:lang="en-US">Sanford, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TavaresFlMember" xlink:label="adc_TavaresFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TavaresFlMember" xlink:to="adc_TavaresFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TavaresFlMember_lbl" xml:lang="en-US">Tavares, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WauchulaFlMember" xlink:label="adc_WauchulaFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WauchulaFlMember" xlink:to="adc_WauchulaFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WauchulaFlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WauchulaFlMember_lbl" xml:lang="en-US">Wauchula, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WestPalmBeachFlMember" xlink:label="adc_WestPalmBeachFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WestPalmBeachFlMember" xlink:to="adc_WestPalmBeachFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WestPalmBeachFlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WestPalmBeachFlMember_lbl" xml:lang="en-US">West Palm Beach, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BrunswickGa2Member" xlink:label="adc_BrunswickGa2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BrunswickGa2Member" xlink:to="adc_BrunswickGa2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BrunswickGa2Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BrunswickGa2Member_lbl" xml:lang="en-US">Brunswick GA 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ColumbusGaMember" xlink:label="adc_ColumbusGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ColumbusGaMember" xlink:to="adc_ColumbusGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ColumbusGaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ColumbusGaMember_lbl" xml:lang="en-US">Columbus, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ConyersGa3Member" xlink:label="adc_ConyersGa3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ConyersGa3Member" xlink:to="adc_ConyersGa3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ConyersGa3Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ConyersGa3Member_lbl" xml:lang="en-US">Conyers, GA 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DaculaGaMember" xlink:label="adc_DaculaGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DaculaGaMember" xlink:to="adc_DaculaGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DaculaGaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DaculaGaMember_lbl" xml:lang="en-US">Dacula, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MariettaGa5Member" xlink:label="adc_MariettaGa5Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MariettaGa5Member" xlink:to="adc_MariettaGa5Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MariettaGa5Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MariettaGa5Member_lbl" xml:lang="en-US">Marietta, GA 5 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TuckerGaMember" xlink:label="adc_TuckerGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TuckerGaMember" xlink:to="adc_TuckerGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TuckerGaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TuckerGaMember_lbl" xml:lang="en-US">Tucker, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BoazAlMember" xlink:label="adc_BoazAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BoazAlMember" xlink:to="adc_BoazAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BoazAlMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BoazAlMember_lbl" xml:lang="en-US">Boaz, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RoanokeAlMember" xlink:label="adc_RoanokeAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RoanokeAlMember" xlink:to="adc_RoanokeAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RoanokeAlMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RoanokeAlMember_lbl" xml:lang="en-US">Roanoke, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SelmaAlMember" xlink:label="adc_SelmaAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SelmaAlMember" xlink:to="adc_SelmaAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SelmaAlMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SelmaAlMember_lbl" xml:lang="en-US">Selma, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MaricopaAzMember" xlink:label="adc_MaricopaAzMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MaricopaAzMember" xlink:to="adc_MaricopaAzMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MaricopaAzMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MaricopaAzMember_lbl" xml:lang="en-US">Maricopa, AZ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ParkerAzMember" xlink:label="adc_ParkerAzMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ParkerAzMember" xlink:to="adc_ParkerAzMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ParkerAzMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ParkerAzMember_lbl" xml:lang="en-US">Parker, AZ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_St.MichaelsAzMember" xlink:label="adc_St.MichaelsAzMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_St.MichaelsAzMember" xlink:to="adc_St.MichaelsAzMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_St.MichaelsAzMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_St.MichaelsAzMember_lbl" xml:lang="en-US">St. Michaels, AZ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LittleRockArMember" xlink:label="adc_LittleRockArMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LittleRockArMember" xlink:to="adc_LittleRockArMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LittleRockArMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LittleRockArMember_lbl" xml:lang="en-US">Little Rock, AR [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GrandJunctionCoMember" xlink:label="adc_GrandJunctionCoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GrandJunctionCoMember" xlink:to="adc_GrandJunctionCoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GrandJunctionCoMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GrandJunctionCoMember_lbl" xml:lang="en-US">Grand Junction, CO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BrookfieldCtMember" xlink:label="adc_BrookfieldCtMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BrookfieldCtMember" xlink:to="adc_BrookfieldCtMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BrookfieldCtMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BrookfieldCtMember_lbl" xml:lang="en-US">Brookfield, CT [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ManchesterCt1Member" xlink:label="adc_ManchesterCt1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ManchesterCt1Member" xlink:to="adc_ManchesterCt1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ManchesterCt1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ManchesterCt1Member_lbl" xml:lang="en-US">Manchester, CT 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WaterburyCtMember" xlink:label="adc_WaterburyCtMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WaterburyCtMember" xlink:to="adc_WaterburyCtMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WaterburyCtMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WaterburyCtMember_lbl" xml:lang="en-US">Waterbury, CT [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ApopkaFl1Member" xlink:label="adc_ApopkaFl1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ApopkaFl1Member" xlink:to="adc_ApopkaFl1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ApopkaFl1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ApopkaFl1Member_lbl" xml:lang="en-US">Apopka, FL 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CapeCoralFlMember" xlink:label="adc_CapeCoralFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CapeCoralFlMember" xlink:to="adc_CapeCoralFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CapeCoralFlMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CapeCoralFlMember_lbl" xml:lang="en-US">Cape Coral, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CrystalRiverFlMember" xlink:label="adc_CrystalRiverFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CrystalRiverFlMember" xlink:to="adc_CrystalRiverFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CrystalRiverFlMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CrystalRiverFlMember_lbl" xml:lang="en-US">Crystal River, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DefuniakSpringsFlMember" xlink:label="adc_DefuniakSpringsFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DefuniakSpringsFlMember" xlink:to="adc_DefuniakSpringsFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DefuniakSpringsFlMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DefuniakSpringsFlMember_lbl" xml:lang="en-US">DeFuniak Springs, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EustisFlMember" xlink:label="adc_EustisFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EustisFlMember" xlink:to="adc_EustisFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_EustisFlMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EustisFlMember_lbl" xml:lang="en-US">Eustis, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HollywoodFlMember" xlink:label="adc_HollywoodFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HollywoodFlMember" xlink:to="adc_HollywoodFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HollywoodFlMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HollywoodFlMember_lbl" xml:lang="en-US">Hollywood, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HomesteadFlMember" xlink:label="adc_HomesteadFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HomesteadFlMember" xlink:to="adc_HomesteadFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HomesteadFlMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HomesteadFlMember_lbl" xml:lang="en-US">Homestead, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JacksonvilleFl2Member" xlink:label="adc_JacksonvilleFl2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JacksonvilleFl2Member" xlink:to="adc_JacksonvilleFl2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_JacksonvilleFl2Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JacksonvilleFl2Member_lbl" xml:lang="en-US">Jacksonville, FL 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MariannaFlMember" xlink:label="adc_MariannaFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MariannaFlMember" xlink:to="adc_MariannaFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MariannaFlMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MariannaFlMember_lbl" xml:lang="en-US">Marianna, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MelbourneFlMember" xlink:label="adc_MelbourneFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MelbourneFlMember" xlink:to="adc_MelbourneFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MelbourneFlMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MelbourneFlMember_lbl" xml:lang="en-US">Melbourne, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MerrittIslandFlMember" xlink:label="adc_MerrittIslandFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MerrittIslandFlMember" xlink:to="adc_MerrittIslandFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MerrittIslandFlMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MerrittIslandFlMember_lbl" xml:lang="en-US">Merritt Island, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_St.PetersburgFlMember" xlink:label="adc_St.PetersburgFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_St.PetersburgFlMember" xlink:to="adc_St.PetersburgFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_St.PetersburgFlMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_St.PetersburgFlMember_lbl" xml:lang="en-US">St. Petersburg, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TampaFlMember" xlink:label="adc_TampaFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TampaFlMember" xlink:to="adc_TampaFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TampaFlMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TampaFlMember_lbl" xml:lang="en-US">Tampa, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TampaFl1Member" xlink:label="adc_TampaFl1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TampaFl1Member" xlink:to="adc_TampaFl1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TampaFl1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TampaFl1Member_lbl" xml:lang="en-US">Tampa, FL 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TitusvilleFlMember" xlink:label="adc_TitusvilleFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TitusvilleFlMember" xlink:to="adc_TitusvilleFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TitusvilleFlMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TitusvilleFlMember_lbl" xml:lang="en-US">Titusville, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WinterHavenFlMember" xlink:label="adc_WinterHavenFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WinterHavenFlMember" xlink:to="adc_WinterHavenFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WinterHavenFlMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WinterHavenFlMember_lbl" xml:lang="en-US">Winter Haven, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AlbanyGa1Member" xlink:label="adc_AlbanyGa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AlbanyGa1Member" xlink:to="adc_AlbanyGa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AlbanyGa1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AlbanyGa1Member_lbl" xml:lang="en-US">Albany, GA 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AustellGaMember" xlink:label="adc_AustellGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AustellGaMember" xlink:to="adc_AustellGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AustellGaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AustellGaMember_lbl" xml:lang="en-US">Austell, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ConyersGaMember" xlink:label="adc_ConyersGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ConyersGaMember" xlink:to="adc_ConyersGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ConyersGaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ConyersGaMember_lbl" xml:lang="en-US">Conyers, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CovingtonGaMember" xlink:label="adc_CovingtonGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CovingtonGaMember" xlink:to="adc_CovingtonGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CovingtonGaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CovingtonGaMember_lbl" xml:lang="en-US">Covington, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DoravilleGaMember" xlink:label="adc_DoravilleGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DoravilleGaMember" xlink:to="adc_DoravilleGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DoravilleGaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DoravilleGaMember_lbl" xml:lang="en-US">Doraville, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DouglasvilleGaMember" xlink:label="adc_DouglasvilleGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DouglasvilleGaMember" xlink:to="adc_DouglasvilleGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DouglasvilleGaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DouglasvilleGaMember_lbl" xml:lang="en-US">Douglasville, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LilburnGaMember" xlink:label="adc_LilburnGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LilburnGaMember" xlink:to="adc_LilburnGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LilburnGaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LilburnGaMember_lbl" xml:lang="en-US">Lilburn, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MariettaGa1Member" xlink:label="adc_MariettaGa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MariettaGa1Member" xlink:to="adc_MariettaGa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MariettaGa1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MariettaGa1Member_lbl" xml:lang="en-US">Marietta, GA 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MariettaGa2Member" xlink:label="adc_MariettaGa2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MariettaGa2Member" xlink:to="adc_MariettaGa2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MariettaGa2Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MariettaGa2Member_lbl" xml:lang="en-US">Marietta, GA 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PoolerGaMember" xlink:label="adc_PoolerGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PoolerGaMember" xlink:to="adc_PoolerGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PoolerGaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PoolerGaMember_lbl" xml:lang="en-US">Pooler, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RiverdaleGaMember" xlink:label="adc_RiverdaleGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RiverdaleGaMember" xlink:to="adc_RiverdaleGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RiverdaleGaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RiverdaleGaMember_lbl" xml:lang="en-US">Riverdale, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SavannahGaMember" xlink:label="adc_SavannahGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SavannahGaMember" xlink:to="adc_SavannahGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SavannahGaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SavannahGaMember_lbl" xml:lang="en-US">Savannah, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_StatesboroGaMember" xlink:label="adc_StatesboroGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_StatesboroGaMember" xlink:to="adc_StatesboroGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_StatesboroGaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_StatesboroGaMember_lbl" xml:lang="en-US">Statesboro, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_UnionCityGaMember" xlink:label="adc_UnionCityGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_UnionCityGaMember" xlink:to="adc_UnionCityGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_UnionCityGaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_UnionCityGaMember_lbl" xml:lang="en-US">Union City, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NampaId1Member" xlink:label="adc_NampaId1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NampaId1Member" xlink:to="adc_NampaId1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NampaId1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NampaId1Member_lbl" xml:lang="en-US">Nampa, ID 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AuroraIl1Member" xlink:label="adc_AuroraIl1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AuroraIl1Member" xlink:to="adc_AuroraIl1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AuroraIl1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AuroraIl1Member_lbl" xml:lang="en-US">Aurora, IL 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BloomingtonIlMember" xlink:label="adc_BloomingtonIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BloomingtonIlMember" xlink:to="adc_BloomingtonIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BloomingtonIlMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BloomingtonIlMember_lbl" xml:lang="en-US">Bloomington, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CarlinvilleIlMember" xlink:label="adc_CarlinvilleIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CarlinvilleIlMember" xlink:to="adc_CarlinvilleIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CarlinvilleIlMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CarlinvilleIlMember_lbl" xml:lang="en-US">Carlinville, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CentraliaIlMember" xlink:label="adc_CentraliaIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CentraliaIlMember" xlink:to="adc_CentraliaIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CentraliaIlMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CentraliaIlMember_lbl" xml:lang="en-US">Centralia, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChicagoIl3Member" xlink:label="adc_ChicagoIl3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChicagoIl3Member" xlink:to="adc_ChicagoIl3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ChicagoIl3Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChicagoIl3Member_lbl" xml:lang="en-US">Chicago, IL 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FloraIlMember" xlink:label="adc_FloraIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FloraIlMember" xlink:to="adc_FloraIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FloraIlMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FloraIlMember_lbl" xml:lang="en-US">Flora, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GurneeIlMember" xlink:label="adc_GurneeIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GurneeIlMember" xlink:to="adc_GurneeIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GurneeIlMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GurneeIlMember_lbl" xml:lang="en-US">Gurnee, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LakeZurichIl1Member" xlink:label="adc_LakeZurichIl1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LakeZurichIl1Member" xlink:to="adc_LakeZurichIl1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LakeZurichIl1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LakeZurichIl1Member_lbl" xml:lang="en-US">Lake Zurich, IL 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MacombIlMember" xlink:label="adc_MacombIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MacombIlMember" xlink:to="adc_MacombIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MacombIlMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MacombIlMember_lbl" xml:lang="en-US">Macomb, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MorrisIl1Member" xlink:label="adc_MorrisIl1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MorrisIl1Member" xlink:to="adc_MorrisIl1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MorrisIl1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MorrisIl1Member_lbl" xml:lang="en-US">Morris, IL 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NewtonIlMember" xlink:label="adc_NewtonIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NewtonIlMember" xlink:to="adc_NewtonIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NewtonIlMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NewtonIlMember_lbl" xml:lang="en-US">Newton, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NorthlakeIlMember" xlink:label="adc_NorthlakeIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NorthlakeIlMember" xlink:to="adc_NorthlakeIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NorthlakeIlMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NorthlakeIlMember_lbl" xml:lang="en-US">Northlake, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RockfordIl1Member" xlink:label="adc_RockfordIl1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RockfordIl1Member" xlink:to="adc_RockfordIl1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RockfordIl1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RockfordIl1Member_lbl" xml:lang="en-US">Rockford, IL 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GreenwoodInMember" xlink:label="adc_GreenwoodInMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GreenwoodInMember" xlink:to="adc_GreenwoodInMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GreenwoodInMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GreenwoodInMember_lbl" xml:lang="en-US">Greenwood, IN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HammondInMember" xlink:label="adc_HammondInMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HammondInMember" xlink:to="adc_HammondInMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HammondInMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HammondInMember_lbl" xml:lang="en-US">Hammond, IN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HammondIn1Member" xlink:label="adc_HammondIn1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HammondIn1Member" xlink:to="adc_HammondIn1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HammondIn1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HammondIn1Member_lbl" xml:lang="en-US">Hammond, IN 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_IndianapolisIn4Member" xlink:label="adc_IndianapolisIn4Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_IndianapolisIn4Member" xlink:to="adc_IndianapolisIn4Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_IndianapolisIn4Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_IndianapolisIn4Member_lbl" xml:lang="en-US">Indianapolis, IN 4 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MishawakaInMember" xlink:label="adc_MishawakaInMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MishawakaInMember" xlink:to="adc_MishawakaInMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MishawakaInMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MishawakaInMember_lbl" xml:lang="en-US">Mishawaka, IN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SouthBendInMember" xlink:label="adc_SouthBendInMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SouthBendInMember" xlink:to="adc_SouthBendInMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SouthBendInMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SouthBendInMember_lbl" xml:lang="en-US">South Bend, IN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WarsawInMember" xlink:label="adc_WarsawInMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WarsawInMember" xlink:to="adc_WarsawInMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WarsawInMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WarsawInMember_lbl" xml:lang="en-US">Warsaw, IN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AckleyIaMember" xlink:label="adc_AckleyIaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AckleyIaMember" xlink:to="adc_AckleyIaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AckleyIaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AckleyIaMember_lbl" xml:lang="en-US">Ackley, IA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OttumwaIaMember" xlink:label="adc_OttumwaIaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OttumwaIaMember" xlink:to="adc_OttumwaIaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OttumwaIaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OttumwaIaMember_lbl" xml:lang="en-US">Ottumwa, IA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RicevilleIaMember" xlink:label="adc_RicevilleIaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RicevilleIaMember" xlink:to="adc_RicevilleIaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RicevilleIaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RicevilleIaMember_lbl" xml:lang="en-US">Riceville, IA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RiversideIaMember" xlink:label="adc_RiversideIaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RiversideIaMember" xlink:to="adc_RiversideIaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RiversideIaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RiversideIaMember_lbl" xml:lang="en-US">Riverside, IA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_UrbandaleIaMember" xlink:label="adc_UrbandaleIaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_UrbandaleIaMember" xlink:to="adc_UrbandaleIaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_UrbandaleIaMember_lbl" xml:lang="en-US">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_UrbandaleIaMember_lbl" xml:lang="en-US">Urbandale, IA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OverlandParkKsMember" xlink:label="adc_OverlandParkKsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OverlandParkKsMember" xlink:to="adc_OverlandParkKsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OverlandParkKsMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OverlandParkKsMember_lbl" xml:lang="en-US">Overland Park, KS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EkronKyMember" xlink:label="adc_EkronKyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EkronKyMember" xlink:to="adc_EkronKyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_EkronKyMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EkronKyMember_lbl" xml:lang="en-US">Ekron, KY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FlorenceKyMember" xlink:label="adc_FlorenceKyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FlorenceKyMember" xlink:to="adc_FlorenceKyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FlorenceKyMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FlorenceKyMember_lbl" xml:lang="en-US">Florence, KY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChalmetteLaMember" xlink:label="adc_ChalmetteLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChalmetteLaMember" xlink:to="adc_ChalmetteLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ChalmetteLaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChalmetteLaMember_lbl" xml:lang="en-US">Chalmette, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DonaldsonvilleLaMember" xlink:label="adc_DonaldsonvilleLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DonaldsonvilleLaMember" xlink:to="adc_DonaldsonvilleLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DonaldsonvilleLaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DonaldsonvilleLaMember_lbl" xml:lang="en-US">Donaldsonville, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FranklintonLaMember" xlink:label="adc_FranklintonLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FranklintonLaMember" xlink:to="adc_FranklintonLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FranklintonLaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FranklintonLaMember_lbl" xml:lang="en-US">Franklinton, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FranklintonLa1Member" xlink:label="adc_FranklintonLa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FranklintonLa1Member" xlink:to="adc_FranklintonLa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FranklintonLa1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FranklintonLa1Member_lbl" xml:lang="en-US">Franklinton, LA 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FranklintonLa2Member" xlink:label="adc_FranklintonLa2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FranklintonLa2Member" xlink:to="adc_FranklintonLa2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FranklintonLa2Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FranklintonLa2Member_lbl" xml:lang="en-US">Franklinton, LA 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FranklintonLa3Member" xlink:label="adc_FranklintonLa3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FranklintonLa3Member" xlink:to="adc_FranklintonLa3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FranklintonLa3Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FranklintonLa3Member_lbl" xml:lang="en-US">Franklinton, LA 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HarveyLaMember" xlink:label="adc_HarveyLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HarveyLaMember" xlink:to="adc_HarveyLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HarveyLaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HarveyLaMember_lbl" xml:lang="en-US">Harvey, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JenaLaMember" xlink:label="adc_JenaLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JenaLaMember" xlink:to="adc_JenaLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_JenaLaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JenaLaMember_lbl" xml:lang="en-US">Jena, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JenningsLaMember" xlink:label="adc_JenningsLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JenningsLaMember" xlink:to="adc_JenningsLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_JenningsLaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JenningsLaMember_lbl" xml:lang="en-US">Jennings, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NewOrleansLa1Member" xlink:label="adc_NewOrleansLa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NewOrleansLa1Member" xlink:to="adc_NewOrleansLa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NewOrleansLa1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NewOrleansLa1Member_lbl" xml:lang="en-US">New Orleans, LA 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PineGroveLaMember" xlink:label="adc_PineGroveLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PineGroveLaMember" xlink:to="adc_PineGroveLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PineGroveLaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PineGroveLaMember_lbl" xml:lang="en-US">Pine Grove, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RayvilleLaMember" xlink:label="adc_RayvilleLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RayvilleLaMember" xlink:to="adc_RayvilleLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RayvilleLaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RayvilleLaMember_lbl" xml:lang="en-US">Rayville, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RoselandLaMember" xlink:label="adc_RoselandLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RoselandLaMember" xlink:to="adc_RoselandLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RoselandLaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RoselandLaMember_lbl" xml:lang="en-US">Roseland, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TalisheekLaMember" xlink:label="adc_TalisheekLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TalisheekLaMember" xlink:to="adc_TalisheekLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TalisheekLaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TalisheekLaMember_lbl" xml:lang="en-US">Talisheek, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BaltimoreMd2Member" xlink:label="adc_BaltimoreMd2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BaltimoreMd2Member" xlink:to="adc_BaltimoreMd2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BaltimoreMd2Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BaltimoreMd2Member_lbl" xml:lang="en-US">Baltimore, MD 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SalisburyMdMember" xlink:label="adc_SalisburyMdMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SalisburyMdMember" xlink:to="adc_SalisburyMdMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SalisburyMdMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SalisburyMdMember_lbl" xml:lang="en-US">Salisbury, MD [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SpringfieldMaMember" xlink:label="adc_SpringfieldMaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SpringfieldMaMember" xlink:to="adc_SpringfieldMaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SpringfieldMaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SpringfieldMaMember_lbl" xml:lang="en-US">Springfield, MA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AnnArborMiMember" xlink:label="adc_AnnArborMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AnnArborMiMember" xlink:to="adc_AnnArborMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AnnArborMiMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AnnArborMiMember_lbl" xml:lang="en-US">Ann Arbor, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BellevilleMiMember" xlink:label="adc_BellevilleMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BellevilleMiMember" xlink:to="adc_BellevilleMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BellevilleMiMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BellevilleMiMember_lbl" xml:lang="en-US">Belleville, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GrandBlancMi1Member" xlink:label="adc_GrandBlancMi1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GrandBlancMi1Member" xlink:to="adc_GrandBlancMi1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GrandBlancMi1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GrandBlancMi1Member_lbl" xml:lang="en-US">Grand Blanc, MI 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JacksonMiMember" xlink:label="adc_JacksonMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JacksonMiMember" xlink:to="adc_JacksonMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_JacksonMiMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JacksonMiMember_lbl" xml:lang="en-US">Jackson, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_KentwoodMiMember" xlink:label="adc_KentwoodMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_KentwoodMiMember" xlink:to="adc_KentwoodMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_KentwoodMiMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_KentwoodMiMember_lbl" xml:lang="en-US">Kentwood, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LakeOrionMiMember" xlink:label="adc_LakeOrionMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LakeOrionMiMember" xlink:to="adc_LakeOrionMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LakeOrionMiMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LakeOrionMiMember_lbl" xml:lang="en-US">Lake Orion, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OnawayMiMember" xlink:label="adc_OnawayMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OnawayMiMember" xlink:to="adc_OnawayMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OnawayMiMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OnawayMiMember_lbl" xml:lang="en-US">Onaway, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChamplinMnMember" xlink:label="adc_ChamplinMnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChamplinMnMember" xlink:to="adc_ChamplinMnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ChamplinMnMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChamplinMnMember_lbl" xml:lang="en-US">Champlin, MN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NorthBranchMnMember" xlink:label="adc_NorthBranchMnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NorthBranchMnMember" xlink:to="adc_NorthBranchMnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NorthBranchMnMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NorthBranchMnMember_lbl" xml:lang="en-US">North Branch, MN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RichfieldMnMember" xlink:label="adc_RichfieldMnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RichfieldMnMember" xlink:to="adc_RichfieldMnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RichfieldMnMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RichfieldMnMember_lbl" xml:lang="en-US">Richfield, MN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BaySt.LouisMsMember" xlink:label="adc_BaySt.LouisMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BaySt.LouisMsMember" xlink:to="adc_BaySt.LouisMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BaySt.LouisMsMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BaySt.LouisMsMember_lbl" xml:lang="en-US">Bay St. Louis, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CorinthMsMember" xlink:label="adc_CorinthMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CorinthMsMember" xlink:to="adc_CorinthMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CorinthMsMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CorinthMsMember_lbl" xml:lang="en-US">Corinth, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ForestMs1Member" xlink:label="adc_ForestMs1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ForestMs1Member" xlink:to="adc_ForestMs1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ForestMs1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ForestMs1Member_lbl" xml:lang="en-US">Forest, MS 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SouthavenMsMember" xlink:label="adc_SouthavenMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SouthavenMsMember" xlink:to="adc_SouthavenMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SouthavenMsMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SouthavenMsMember_lbl" xml:lang="en-US">Southaven, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WaynesboroMsMember" xlink:label="adc_WaynesboroMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WaynesboroMsMember" xlink:to="adc_WaynesboroMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WaynesboroMsMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WaynesboroMsMember_lbl" xml:lang="en-US">Waynesboro, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BlueSpringsMoMember" xlink:label="adc_BlueSpringsMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BlueSpringsMoMember" xlink:to="adc_BlueSpringsMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BlueSpringsMoMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BlueSpringsMoMember_lbl" xml:lang="en-US">Blue Springs, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FlorissantMoMember" xlink:label="adc_FlorissantMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FlorissantMoMember" xlink:to="adc_FlorissantMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FlorissantMoMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FlorissantMoMember_lbl" xml:lang="en-US">Florissant, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JoplinMo1Member" xlink:label="adc_JoplinMo1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JoplinMo1Member" xlink:to="adc_JoplinMo1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_JoplinMo1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JoplinMo1Member_lbl" xml:lang="en-US">Joplin, MO 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LibertyMoMember" xlink:label="adc_LibertyMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LibertyMoMember" xlink:to="adc_LibertyMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LibertyMoMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LibertyMoMember_lbl" xml:lang="en-US">Liberty, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NeoshoMoMember" xlink:label="adc_NeoshoMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NeoshoMoMember" xlink:to="adc_NeoshoMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NeoshoMoMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NeoshoMoMember_lbl" xml:lang="en-US">Neosho, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SpringfieldMo1Member" xlink:label="adc_SpringfieldMo1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SpringfieldMo1Member" xlink:to="adc_SpringfieldMo1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SpringfieldMo1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SpringfieldMo1Member_lbl" xml:lang="en-US">Springfield, MO 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_St.PetersMoMember" xlink:label="adc_St.PetersMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_St.PetersMoMember" xlink:to="adc_St.PetersMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_St.PetersMoMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_St.PetersMoMember_lbl" xml:lang="en-US">St. Peters, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WebbCityMoMember" xlink:label="adc_WebbCityMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WebbCityMoMember" xlink:to="adc_WebbCityMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WebbCityMoMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WebbCityMoMember_lbl" xml:lang="en-US">Webb City, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NashuaNhMember" xlink:label="adc_NashuaNhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NashuaNhMember" xlink:to="adc_NashuaNhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NashuaNhMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NashuaNhMember_lbl" xml:lang="en-US">Nashua, NH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ForkedRiverNjMember" xlink:label="adc_ForkedRiverNjMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ForkedRiverNjMember" xlink:to="adc_ForkedRiverNjMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ForkedRiverNjMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ForkedRiverNjMember_lbl" xml:lang="en-US">Forked River, NJ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ForkedRiverNj1Member" xlink:label="adc_ForkedRiverNj1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ForkedRiverNj1Member" xlink:to="adc_ForkedRiverNj1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ForkedRiverNj1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ForkedRiverNj1Member_lbl" xml:lang="en-US">Forked River, NJ 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ForkedRiverNj2Member" xlink:label="adc_ForkedRiverNj2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ForkedRiverNj2Member" xlink:to="adc_ForkedRiverNj2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ForkedRiverNj2Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ForkedRiverNj2Member_lbl" xml:lang="en-US">Forked River, NJ 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ForkedRiverNj3Member" xlink:label="adc_ForkedRiverNj3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ForkedRiverNj3Member" xlink:to="adc_ForkedRiverNj3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ForkedRiverNj3Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ForkedRiverNj3Member_lbl" xml:lang="en-US">Forked River, NJ 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ForkedRiverNj4Member" xlink:label="adc_ForkedRiverNj4Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ForkedRiverNj4Member" xlink:to="adc_ForkedRiverNj4Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ForkedRiverNj4Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ForkedRiverNj4Member_lbl" xml:lang="en-US">Forked River, NJ 4 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WoodlandParkNjMember" xlink:label="adc_WoodlandParkNjMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WoodlandParkNjMember" xlink:to="adc_WoodlandParkNjMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WoodlandParkNjMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WoodlandParkNjMember_lbl" xml:lang="en-US">Woodland Park, NJ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BernalilloNmMember" xlink:label="adc_BernalilloNmMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BernalilloNmMember" xlink:to="adc_BernalilloNmMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BernalilloNmMember_lbl" xml:lang="en-US">Bernalillo, NM [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FarmingtonNmMember" xlink:label="adc_FarmingtonNmMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FarmingtonNmMember" xlink:to="adc_FarmingtonNmMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FarmingtonNmMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FarmingtonNmMember_lbl" xml:lang="en-US">Farmington, NM [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CanandaigueNyMember" xlink:label="adc_CanandaigueNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CanandaigueNyMember" xlink:to="adc_CanandaigueNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CanandaigueNyMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CanandaigueNyMember_lbl" xml:lang="en-US">Canandaigue, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CatskillNyMember" xlink:label="adc_CatskillNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CatskillNyMember" xlink:to="adc_CatskillNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CatskillNyMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CatskillNyMember_lbl" xml:lang="en-US">Catskill, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CliftonParkNyMember" xlink:label="adc_CliftonParkNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CliftonParkNyMember" xlink:to="adc_CliftonParkNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CliftonParkNyMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CliftonParkNyMember_lbl" xml:lang="en-US">Clifton Park, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ElmiraNyMember" xlink:label="adc_ElmiraNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ElmiraNyMember" xlink:to="adc_ElmiraNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ElmiraNyMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ElmiraNyMember_lbl" xml:lang="en-US">Elmira, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GeneseoNyMember" xlink:label="adc_GeneseoNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GeneseoNyMember" xlink:to="adc_GeneseoNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GeneseoNyMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GeneseoNyMember_lbl" xml:lang="en-US">Geneseo, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GreeceNyMember" xlink:label="adc_GreeceNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GreeceNyMember" xlink:to="adc_GreeceNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GreeceNyMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GreeceNyMember_lbl" xml:lang="en-US">Greece, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HamburgNyMember" xlink:label="adc_HamburgNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HamburgNyMember" xlink:to="adc_HamburgNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HamburgNyMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HamburgNyMember_lbl" xml:lang="en-US">Hamburg, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LathamNyMember" xlink:label="adc_LathamNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LathamNyMember" xlink:to="adc_LathamNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LathamNyMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LathamNyMember_lbl" xml:lang="en-US">Latham, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_N.SyracuseNyMember" xlink:label="adc_N.SyracuseNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_N.SyracuseNyMember" xlink:to="adc_N.SyracuseNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_N.SyracuseNyMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_N.SyracuseNyMember_lbl" xml:lang="en-US">N. Syracuse, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NiagaraFallsNyMember" xlink:label="adc_NiagaraFallsNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NiagaraFallsNyMember" xlink:to="adc_NiagaraFallsNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NiagaraFallsNyMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NiagaraFallsNyMember_lbl" xml:lang="en-US">Niagara Falls, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RochesterNy1Member" xlink:label="adc_RochesterNy1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RochesterNy1Member" xlink:to="adc_RochesterNy1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RochesterNy1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RochesterNy1Member_lbl" xml:lang="en-US">Rochester, NY 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RochesterNy2Member" xlink:label="adc_RochesterNy2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RochesterNy2Member" xlink:to="adc_RochesterNy2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RochesterNy2Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RochesterNy2Member_lbl" xml:lang="en-US">Rochester, NY 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RochesterNy3Member" xlink:label="adc_RochesterNy3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RochesterNy3Member" xlink:to="adc_RochesterNy3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RochesterNy3Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RochesterNy3Member_lbl" xml:lang="en-US">Rochester, NY 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SchenectadyNyMember" xlink:label="adc_SchenectadyNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SchenectadyNyMember" xlink:to="adc_SchenectadyNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SchenectadyNyMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SchenectadyNyMember_lbl" xml:lang="en-US">Schenectady, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SchenectadyNy1Member" xlink:label="adc_SchenectadyNy1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SchenectadyNy1Member" xlink:to="adc_SchenectadyNy1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SchenectadyNy1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SchenectadyNy1Member_lbl" xml:lang="en-US">Schenectady, NY 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SyracuseNyMember" xlink:label="adc_SyracuseNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SyracuseNyMember" xlink:to="adc_SyracuseNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SyracuseNyMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SyracuseNyMember_lbl" xml:lang="en-US">Syracuse, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SyracuseNy1Member" xlink:label="adc_SyracuseNy1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SyracuseNy1Member" xlink:to="adc_SyracuseNy1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SyracuseNy1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SyracuseNy1Member_lbl" xml:lang="en-US">Syracuse, NY 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TonawandaNyMember" xlink:label="adc_TonawandaNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TonawandaNyMember" xlink:to="adc_TonawandaNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TonawandaNyMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TonawandaNyMember_lbl" xml:lang="en-US">Tonawanda, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TonawandaNy1Member" xlink:label="adc_TonawandaNy1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TonawandaNy1Member" xlink:to="adc_TonawandaNy1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TonawandaNy1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TonawandaNy1Member_lbl" xml:lang="en-US">Tonawanda, NY 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_W.SenecaNyMember" xlink:label="adc_W.SenecaNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_W.SenecaNyMember" xlink:to="adc_W.SenecaNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_W.SenecaNyMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_W.SenecaNyMember_lbl" xml:lang="en-US">W. Seneca, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WilliamsvilleNyMember" xlink:label="adc_WilliamsvilleNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WilliamsvilleNyMember" xlink:to="adc_WilliamsvilleNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WilliamsvilleNyMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WilliamsvilleNyMember_lbl" xml:lang="en-US">Williamsville, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CharlotteNc1Member" xlink:label="adc_CharlotteNc1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CharlotteNc1Member" xlink:to="adc_CharlotteNc1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CharlotteNc1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CharlotteNc1Member_lbl" xml:lang="en-US">Charlotte, NC 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ConcordNc1Member" xlink:label="adc_ConcordNc1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ConcordNc1Member" xlink:to="adc_ConcordNc1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ConcordNc1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ConcordNc1Member_lbl" xml:lang="en-US">Concord, NC 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DurhamNcMember" xlink:label="adc_DurhamNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DurhamNcMember" xlink:to="adc_DurhamNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DurhamNcMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DurhamNcMember_lbl" xml:lang="en-US">Durham, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FayettevilleNc1Member" xlink:label="adc_FayettevilleNc1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FayettevilleNc1Member" xlink:to="adc_FayettevilleNc1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FayettevilleNc1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FayettevilleNc1Member_lbl" xml:lang="en-US">Fayetteville, NC 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GreensboroNcMember" xlink:label="adc_GreensboroNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GreensboroNcMember" xlink:to="adc_GreensboroNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GreensboroNcMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GreensboroNcMember_lbl" xml:lang="en-US">Greensboro, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GreenvilleNcMember" xlink:label="adc_GreenvilleNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GreenvilleNcMember" xlink:to="adc_GreenvilleNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GreenvilleNcMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GreenvilleNcMember_lbl" xml:lang="en-US">Greenville, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HighPointNcMember" xlink:label="adc_HighPointNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HighPointNcMember" xlink:to="adc_HighPointNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HighPointNcMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HighPointNcMember_lbl" xml:lang="en-US">High Point, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_KernersvilleNcMember" xlink:label="adc_KernersvilleNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_KernersvilleNcMember" xlink:to="adc_KernersvilleNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_KernersvilleNcMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_KernersvilleNcMember_lbl" xml:lang="en-US">Kernersville, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PinevilleNcMember" xlink:label="adc_PinevilleNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PinevilleNcMember" xlink:to="adc_PinevilleNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PinevilleNcMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PinevilleNcMember_lbl" xml:lang="en-US">Pineville, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RockinghamNcMember" xlink:label="adc_RockinghamNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RockinghamNcMember" xlink:to="adc_RockinghamNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RockinghamNcMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RockinghamNcMember_lbl" xml:lang="en-US">Rockingham, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SalisburyNcMember" xlink:label="adc_SalisburyNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SalisburyNcMember" xlink:to="adc_SalisburyNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SalisburyNcMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SalisburyNcMember_lbl" xml:lang="en-US">Salisbury, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ZebulonNcMember" xlink:label="adc_ZebulonNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ZebulonNcMember" xlink:to="adc_ZebulonNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ZebulonNcMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ZebulonNcMember_lbl" xml:lang="en-US">Zebulon, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AkronOh3Member" xlink:label="adc_AkronOh3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AkronOh3Member" xlink:to="adc_AkronOh3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AkronOh3Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AkronOh3Member_lbl" xml:lang="en-US">Akron, OH 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BellevueOhMember" xlink:label="adc_BellevueOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BellevueOhMember" xlink:to="adc_BellevueOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BellevueOhMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BellevueOhMember_lbl" xml:lang="en-US">Bellevue, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CantonOhMember" xlink:label="adc_CantonOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CantonOhMember" xlink:to="adc_CantonOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CantonOhMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CantonOhMember_lbl" xml:lang="en-US">Canton, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ColumbusOh3Member" xlink:label="adc_ColumbusOh3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ColumbusOh3Member" xlink:to="adc_ColumbusOh3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ColumbusOh3Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ColumbusOh3Member_lbl" xml:lang="en-US">Columbus, OH 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FairviewParkOhMember" xlink:label="adc_FairviewParkOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FairviewParkOhMember" xlink:to="adc_FairviewParkOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FairviewParkOhMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FairviewParkOhMember_lbl" xml:lang="en-US">Fairview Park, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FranklinOh1Member" xlink:label="adc_FranklinOh1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FranklinOh1Member" xlink:to="adc_FranklinOh1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FranklinOh1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FranklinOh1Member_lbl" xml:lang="en-US">Franklin, OH 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MiddletownOhMember" xlink:label="adc_MiddletownOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MiddletownOhMember" xlink:to="adc_MiddletownOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MiddletownOhMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MiddletownOhMember_lbl" xml:lang="en-US">Middletown, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NilesOhMember" xlink:label="adc_NilesOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NilesOhMember" xlink:to="adc_NilesOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NilesOhMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NilesOhMember_lbl" xml:lang="en-US">Niles, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NorthOlmstedOhMember" xlink:label="adc_NorthOlmstedOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NorthOlmstedOhMember" xlink:to="adc_NorthOlmstedOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NorthOlmstedOhMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NorthOlmstedOhMember_lbl" xml:lang="en-US">North Olmsted, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WarrenOhMember" xlink:label="adc_WarrenOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WarrenOhMember" xlink:to="adc_WarrenOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WarrenOhMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WarrenOhMember_lbl" xml:lang="en-US">Warren, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WarrensvilleHeightsOh1Member" xlink:label="adc_WarrensvilleHeightsOh1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WarrensvilleHeightsOh1Member" xlink:to="adc_WarrensvilleHeightsOh1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WarrensvilleHeightsOh1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WarrensvilleHeightsOh1Member_lbl" xml:lang="en-US">Warrensville Heights, OH 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_YoungstownOh1Member" xlink:label="adc_YoungstownOh1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_YoungstownOh1Member" xlink:to="adc_YoungstownOh1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_YoungstownOh1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_YoungstownOh1Member_lbl" xml:lang="en-US">Youngstown, OH 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BrokenArrowOkMember" xlink:label="adc_BrokenArrowOkMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BrokenArrowOkMember" xlink:to="adc_BrokenArrowOkMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BrokenArrowOkMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BrokenArrowOkMember_lbl" xml:lang="en-US">Broken Arrow, OK [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChickashaOkMember" xlink:label="adc_ChickashaOkMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChickashaOkMember" xlink:to="adc_ChickashaOkMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChickashaOkMember_lbl" xml:lang="en-US">Chickasha, OK [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CowetaOkMember" xlink:label="adc_CowetaOkMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CowetaOkMember" xlink:to="adc_CowetaOkMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CowetaOkMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CowetaOkMember_lbl" xml:lang="en-US">Coweta, OK [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MidwestCityOkMember" xlink:label="adc_MidwestCityOkMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MidwestCityOkMember" xlink:to="adc_MidwestCityOkMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MidwestCityOkMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MidwestCityOkMember_lbl" xml:lang="en-US">Midwest City, OK [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OklahomaCityOk1Member" xlink:label="adc_OklahomaCityOk1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OklahomaCityOk1Member" xlink:to="adc_OklahomaCityOk1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OklahomaCityOk1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OklahomaCityOk1Member_lbl" xml:lang="en-US">Oklahoma City, OK 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ShawneeOkMember" xlink:label="adc_ShawneeOkMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ShawneeOkMember" xlink:to="adc_ShawneeOkMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ShawneeOkMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ShawneeOkMember_lbl" xml:lang="en-US">Shawnee, OK [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WrightCityOkMember" xlink:label="adc_WrightCityOkMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WrightCityOkMember" xlink:to="adc_WrightCityOkMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WrightCityOkMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WrightCityOkMember_lbl" xml:lang="en-US">Wright City, OK [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HillsboroOrMember" xlink:label="adc_HillsboroOrMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HillsboroOrMember" xlink:to="adc_HillsboroOrMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HillsboroOrMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HillsboroOrMember_lbl" xml:lang="en-US">Hillsboro, OR [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CarlislePaMember" xlink:label="adc_CarlislePaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CarlislePaMember" xlink:to="adc_CarlislePaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CarlislePaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CarlislePaMember_lbl" xml:lang="en-US">Carlisle, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EriePa1Member" xlink:label="adc_EriePa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EriePa1Member" xlink:to="adc_EriePa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_EriePa1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EriePa1Member_lbl" xml:lang="en-US">Erie, PA 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JohnstownPaMember" xlink:label="adc_JohnstownPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JohnstownPaMember" xlink:to="adc_JohnstownPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_JohnstownPaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JohnstownPaMember_lbl" xml:lang="en-US">Johnstown, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_KingOfPrussiaPaMember" xlink:label="adc_KingOfPrussiaPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_KingOfPrussiaPaMember" xlink:to="adc_KingOfPrussiaPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_KingOfPrussiaPaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_KingOfPrussiaPaMember_lbl" xml:lang="en-US">King of Prussia, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PhiladelphiaPaMember" xlink:label="adc_PhiladelphiaPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PhiladelphiaPaMember" xlink:to="adc_PhiladelphiaPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PhiladelphiaPaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PhiladelphiaPaMember_lbl" xml:lang="en-US">Philadelphia, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PhiladelphiaPa1Member" xlink:label="adc_PhiladelphiaPa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PhiladelphiaPa1Member" xlink:to="adc_PhiladelphiaPa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PhiladelphiaPa1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PhiladelphiaPa1Member_lbl" xml:lang="en-US">Philadelphia, PA 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PittsburghPa1Member" xlink:label="adc_PittsburghPa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PittsburghPa1Member" xlink:to="adc_PittsburghPa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PittsburghPa1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PittsburghPa1Member_lbl" xml:lang="en-US">Pittsburgh, PA 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PittsburghPa2Member" xlink:label="adc_PittsburghPa2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PittsburghPa2Member" xlink:to="adc_PittsburghPa2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PittsburghPa2Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PittsburghPa2Member_lbl" xml:lang="en-US">Pittsburgh, PA 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_UpperDarbyPaMember" xlink:label="adc_UpperDarbyPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_UpperDarbyPaMember" xlink:to="adc_UpperDarbyPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_UpperDarbyPaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_UpperDarbyPaMember_lbl" xml:lang="en-US">Upper Darby, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WysoxPaMember" xlink:label="adc_WysoxPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WysoxPaMember" xlink:to="adc_WysoxPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WysoxPaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WysoxPaMember_lbl" xml:lang="en-US">Wysox, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RichmondRiMember" xlink:label="adc_RichmondRiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RichmondRiMember" xlink:to="adc_RichmondRiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RichmondRiMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RichmondRiMember_lbl" xml:lang="en-US">Richmond, RI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WarwickRiMember" xlink:label="adc_WarwickRiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WarwickRiMember" xlink:to="adc_WarwickRiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WarwickRiMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WarwickRiMember_lbl" xml:lang="en-US">Warwick, RI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GreenvilleScMember" xlink:label="adc_GreenvilleScMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GreenvilleScMember" xlink:to="adc_GreenvilleScMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GreenvilleScMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GreenvilleScMember_lbl" xml:lang="en-US">Greenville, SC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LakeCityScMember" xlink:label="adc_LakeCityScMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LakeCityScMember" xlink:to="adc_LakeCityScMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LakeCityScMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LakeCityScMember_lbl" xml:lang="en-US">Lake City, SC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ManningScMember" xlink:label="adc_ManningScMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ManningScMember" xlink:to="adc_ManningScMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ManningScMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ManningScMember_lbl" xml:lang="en-US">Manning, SC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_Mt.PleasantScMember" xlink:label="adc_Mt.PleasantScMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_Mt.PleasantScMember" xlink:to="adc_Mt.PleasantScMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_Mt.PleasantScMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_Mt.PleasantScMember_lbl" xml:lang="en-US">Mt. Pleasant, SC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MyrtleBeachScMember" xlink:label="adc_MyrtleBeachScMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MyrtleBeachScMember" xlink:to="adc_MyrtleBeachScMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MyrtleBeachScMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MyrtleBeachScMember_lbl" xml:lang="en-US">Myrtle Beach, SC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SpartanburgSc4Member" xlink:label="adc_SpartanburgSc4Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SpartanburgSc4Member" xlink:to="adc_SpartanburgSc4Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SpartanburgSc4Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SpartanburgSc4Member_lbl" xml:lang="en-US">Spartanburg, SC 4 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SumterSc1Member" xlink:label="adc_SumterSc1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SumterSc1Member" xlink:to="adc_SumterSc1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SumterSc1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SumterSc1Member_lbl" xml:lang="en-US">Sumter, SC 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WalterboroSc1Member" xlink:label="adc_WalterboroSc1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WalterboroSc1Member" xlink:to="adc_WalterboroSc1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WalterboroSc1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WalterboroSc1Member_lbl" xml:lang="en-US">Walterboro, SC 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChattanoogaTn1Member" xlink:label="adc_ChattanoogaTn1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChattanoogaTn1Member" xlink:to="adc_ChattanoogaTn1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ChattanoogaTn1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChattanoogaTn1Member_lbl" xml:lang="en-US">Chattanooga, TN 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JohnsonCityTnMember" xlink:label="adc_JohnsonCityTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JohnsonCityTnMember" xlink:to="adc_JohnsonCityTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_JohnsonCityTnMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JohnsonCityTnMember_lbl" xml:lang="en-US">Johnson City, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BeaumontTxMember" xlink:label="adc_BeaumontTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BeaumontTxMember" xlink:to="adc_BeaumontTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BeaumontTxMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BeaumontTxMember_lbl" xml:lang="en-US">Beaumont, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DonnaTxMember" xlink:label="adc_DonnaTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DonnaTxMember" xlink:to="adc_DonnaTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DonnaTxMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DonnaTxMember_lbl" xml:lang="en-US">Donna, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FairfieldTxMember" xlink:label="adc_FairfieldTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FairfieldTxMember" xlink:to="adc_FairfieldTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FairfieldTxMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FairfieldTxMember_lbl" xml:lang="en-US">Fairfield, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GrovesTxMember" xlink:label="adc_GrovesTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GrovesTxMember" xlink:to="adc_GrovesTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GrovesTxMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GrovesTxMember_lbl" xml:lang="en-US">Groves, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HumbleTxMember" xlink:label="adc_HumbleTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HumbleTxMember" xlink:to="adc_HumbleTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HumbleTxMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HumbleTxMember_lbl" xml:lang="en-US">Humble, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JacksboroTxMember" xlink:label="adc_JacksboroTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JacksboroTxMember" xlink:to="adc_JacksboroTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_JacksboroTxMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JacksboroTxMember_lbl" xml:lang="en-US">Jacksboro, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_KemahTxMember" xlink:label="adc_KemahTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_KemahTxMember" xlink:to="adc_KemahTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_KemahTxMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_KemahTxMember_lbl" xml:lang="en-US">Kemah, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LamesaTxMember" xlink:label="adc_LamesaTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LamesaTxMember" xlink:to="adc_LamesaTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LamesaTxMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LamesaTxMember_lbl" xml:lang="en-US">Lamesa, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LiveOakTxMember" xlink:label="adc_LiveOakTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LiveOakTxMember" xlink:to="adc_LiveOakTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LiveOakTxMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LiveOakTxMember_lbl" xml:lang="en-US">Live Oak, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LufkinTx1Member" xlink:label="adc_LufkinTx1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LufkinTx1Member" xlink:to="adc_LufkinTx1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LufkinTx1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LufkinTx1Member_lbl" xml:lang="en-US">Lufkin, TX 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PlanoTxMember" xlink:label="adc_PlanoTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PlanoTxMember" xlink:to="adc_PlanoTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PlanoTxMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PlanoTxMember_lbl" xml:lang="en-US">Plano, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PortArthurTx1Member" xlink:label="adc_PortArthurTx1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PortArthurTx1Member" xlink:to="adc_PortArthurTx1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PortArthurTx1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PortArthurTx1Member_lbl" xml:lang="en-US">Port Arthur, TX 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PorterTxMember" xlink:label="adc_PorterTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PorterTxMember" xlink:to="adc_PorterTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PorterTxMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PorterTxMember_lbl" xml:lang="en-US">Porter, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TomballTxMember" xlink:label="adc_TomballTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TomballTxMember" xlink:to="adc_TomballTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TomballTxMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TomballTxMember_lbl" xml:lang="en-US">Tomball, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_UniversalCityTxMember" xlink:label="adc_UniversalCityTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_UniversalCityTxMember" xlink:to="adc_UniversalCityTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_UniversalCityTxMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_UniversalCityTxMember_lbl" xml:lang="en-US">Universal City, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WaxahachieTxMember" xlink:label="adc_WaxahachieTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WaxahachieTxMember" xlink:to="adc_WaxahachieTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WaxahachieTxMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WaxahachieTxMember_lbl" xml:lang="en-US">Waxahachie, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WillisTxMember" xlink:label="adc_WillisTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WillisTxMember" xlink:to="adc_WillisTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WillisTxMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WillisTxMember_lbl" xml:lang="en-US">Willis, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LoganUtMember" xlink:label="adc_LoganUtMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LoganUtMember" xlink:to="adc_LoganUtMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LoganUtMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LoganUtMember_lbl" xml:lang="en-US">Logan, UT [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChristiansburgVaMember" xlink:label="adc_ChristiansburgVaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChristiansburgVaMember" xlink:to="adc_ChristiansburgVaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ChristiansburgVaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChristiansburgVaMember_lbl" xml:lang="en-US">Christiansburg, VA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FredericksburgVaMember" xlink:label="adc_FredericksburgVaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FredericksburgVaMember" xlink:to="adc_FredericksburgVaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FredericksburgVaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FredericksburgVaMember_lbl" xml:lang="en-US">Fredericksburg, VA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GlenAllenVa1Member" xlink:label="adc_GlenAllenVa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GlenAllenVa1Member" xlink:to="adc_GlenAllenVa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GlenAllenVa1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GlenAllenVa1Member_lbl" xml:lang="en-US">Glen Allen, VA 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HamptonVaMember" xlink:label="adc_HamptonVaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HamptonVaMember" xlink:to="adc_HamptonVaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HamptonVaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HamptonVaMember_lbl" xml:lang="en-US">Hampton, VA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LouisaVaMember" xlink:label="adc_LouisaVaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LouisaVaMember" xlink:to="adc_LouisaVaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LouisaVaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LouisaVaMember_lbl" xml:lang="en-US">Louisa, VA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ManassasVaMember" xlink:label="adc_ManassasVaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ManassasVaMember" xlink:to="adc_ManassasVaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ManassasVaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ManassasVaMember_lbl" xml:lang="en-US">Manassas, VA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_VirginiaBeachVaMember" xlink:label="adc_VirginiaBeachVaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_VirginiaBeachVaMember" xlink:to="adc_VirginiaBeachVaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_VirginiaBeachVaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_VirginiaBeachVaMember_lbl" xml:lang="en-US">Virginia Beach, VA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_VirginiaBeachVa1Member" xlink:label="adc_VirginiaBeachVa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_VirginiaBeachVa1Member" xlink:to="adc_VirginiaBeachVa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_VirginiaBeachVa1Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_VirginiaBeachVa1Member_lbl" xml:lang="en-US">Virginia Beach, VA 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EverettWaMember" xlink:label="adc_EverettWaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EverettWaMember" xlink:to="adc_EverettWaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_EverettWaMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EverettWaMember_lbl" xml:lang="en-US">Everett, WA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BluefieldWvMember" xlink:label="adc_BluefieldWvMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BluefieldWvMember" xlink:to="adc_BluefieldWvMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BluefieldWvMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BluefieldWvMember_lbl" xml:lang="en-US">Bluefield, WV [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GreenBayWiMember" xlink:label="adc_GreenBayWiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GreenBayWiMember" xlink:to="adc_GreenBayWiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GreenBayWiMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GreenBayWiMember_lbl" xml:lang="en-US">Green Bay, WI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LaCrosseWiMember" xlink:label="adc_LaCrosseWiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LaCrosseWiMember" xlink:to="adc_LaCrosseWiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LaCrosseWiMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LaCrosseWiMember_lbl" xml:lang="en-US">La Crosse, WI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MadisonWiMember" xlink:label="adc_MadisonWiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MadisonWiMember" xlink:to="adc_MadisonWiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MadisonWiMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MadisonWiMember_lbl" xml:lang="en-US">Madison, WI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_Mt.PleasantWiMember" xlink:label="adc_Mt.PleasantWiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_Mt.PleasantWiMember" xlink:to="adc_Mt.PleasantWiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_Mt.PleasantWiMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_Mt.PleasantWiMember_lbl" xml:lang="en-US">Mt. Pleasant, WI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SchofieldWiMember" xlink:label="adc_SchofieldWiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SchofieldWiMember" xlink:to="adc_SchofieldWiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SchofieldWiMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SchofieldWiMember_lbl" xml:lang="en-US">Schofield, WI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SheboyganWiMember" xlink:label="adc_SheboyganWiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SheboyganWiMember" xlink:to="adc_SheboyganWiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SheboyganWiMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SheboyganWiMember_lbl" xml:lang="en-US">Sheboygan, WI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChubbuckId1Member" xlink:label="adc_ChubbuckId1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChubbuckId1Member" xlink:to="adc_ChubbuckId1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ChubbuckId1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChubbuckId1Member_lbl" xml:lang="en-US">Chubbuck, ID 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChubbuckId2Member" xlink:label="adc_ChubbuckId2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChubbuckId2Member" xlink:to="adc_ChubbuckId2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ChubbuckId2Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChubbuckId2Member_lbl" xml:lang="en-US">Chubbuck, ID 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChubbuckId3Member" xlink:label="adc_ChubbuckId3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChubbuckId3Member" xlink:to="adc_ChubbuckId3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ChubbuckId3Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChubbuckId3Member_lbl" xml:lang="en-US">Chubbuck, ID 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EdwardsvilleIlMember" xlink:label="adc_EdwardsvilleIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EdwardsvilleIlMember" xlink:to="adc_EdwardsvilleIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_EdwardsvilleIlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EdwardsvilleIlMember_lbl" xml:lang="en-US">Edwardsville, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ElkGroveVillageIlMember" xlink:label="adc_ElkGroveVillageIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ElkGroveVillageIlMember" xlink:to="adc_ElkGroveVillageIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ElkGroveVillageIlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ElkGroveVillageIlMember_lbl" xml:lang="en-US">Elk Grove Village, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EvergreenParkIlMember" xlink:label="adc_EvergreenParkIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EvergreenParkIlMember" xlink:to="adc_EvergreenParkIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_EvergreenParkIlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EvergreenParkIlMember_lbl" xml:lang="en-US">Evergreen Park, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FreeportIlMember" xlink:label="adc_FreeportIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FreeportIlMember" xlink:to="adc_FreeportIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FreeportIlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FreeportIlMember_lbl" xml:lang="en-US">Freeport, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GenevaIlMember" xlink:label="adc_GenevaIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GenevaIlMember" xlink:to="adc_GenevaIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GenevaIlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GenevaIlMember_lbl" xml:lang="en-US">Geneva, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GreenvilleIlMember" xlink:label="adc_GreenvilleIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GreenvilleIlMember" xlink:to="adc_GreenvilleIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GreenvilleIlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GreenvilleIlMember_lbl" xml:lang="en-US">Greenville, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MurphysboroIlMember" xlink:label="adc_MurphysboroIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MurphysboroIlMember" xlink:to="adc_MurphysboroIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MurphysboroIlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MurphysboroIlMember_lbl" xml:lang="en-US">Murphysboro, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RockfordIl4Member" xlink:label="adc_RockfordIl4Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RockfordIl4Member" xlink:to="adc_RockfordIl4Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RockfordIl4Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RockfordIl4Member_lbl" xml:lang="en-US">Rockford, IL 4 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RoundLakeIlMember" xlink:label="adc_RoundLakeIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RoundLakeIlMember" xlink:to="adc_RoundLakeIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RoundLakeIlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RoundLakeIlMember_lbl" xml:lang="en-US">Round Lake, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FishersInMember" xlink:label="adc_FishersInMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FishersInMember" xlink:to="adc_FishersInMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FishersInMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FishersInMember_lbl" xml:lang="en-US">Fishers, IN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GasCityInMember" xlink:label="adc_GasCityInMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GasCityInMember" xlink:to="adc_GasCityInMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GasCityInMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GasCityInMember_lbl" xml:lang="en-US">Gas City, IN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MarionInMember" xlink:label="adc_MarionInMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MarionInMember" xlink:to="adc_MarionInMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MarionInMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MarionInMember_lbl" xml:lang="en-US">Marion, IN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WestfieldInMember" xlink:label="adc_WestfieldInMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WestfieldInMember" xlink:to="adc_WestfieldInMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WestfieldInMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WestfieldInMember_lbl" xml:lang="en-US">Westfield, IN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WaterlooIaMember" xlink:label="adc_WaterlooIaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WaterlooIaMember" xlink:to="adc_WaterlooIaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WaterlooIaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WaterlooIaMember_lbl" xml:lang="en-US">Waterloo, IA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ConcordiaKsMember" xlink:label="adc_ConcordiaKsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ConcordiaKsMember" xlink:to="adc_ConcordiaKsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ConcordiaKsMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ConcordiaKsMember_lbl" xml:lang="en-US">Concordia, KS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ParsonsKsMember" xlink:label="adc_ParsonsKsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ParsonsKsMember" xlink:to="adc_ParsonsKsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ParsonsKsMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ParsonsKsMember_lbl" xml:lang="en-US">Parsons, KS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PrattKsMember" xlink:label="adc_PrattKsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PrattKsMember" xlink:to="adc_PrattKsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PrattKsMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PrattKsMember_lbl" xml:lang="en-US">Pratt, KS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WellingtonKsMember" xlink:label="adc_WellingtonKsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WellingtonKsMember" xlink:to="adc_WellingtonKsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WellingtonKsMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WellingtonKsMember_lbl" xml:lang="en-US">Wellington, KS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WichitaKsMember" xlink:label="adc_WichitaKsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WichitaKsMember" xlink:to="adc_WichitaKsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WichitaKsMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WichitaKsMember_lbl" xml:lang="en-US">Wichita, KS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CrestwoodKyMember" xlink:label="adc_CrestwoodKyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CrestwoodKyMember" xlink:to="adc_CrestwoodKyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CrestwoodKyMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CrestwoodKyMember_lbl" xml:lang="en-US">Crestwood, KY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GeorgetownKyMember" xlink:label="adc_GeorgetownKyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GeorgetownKyMember" xlink:to="adc_GeorgetownKyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GeorgetownKyMember_lbl" xml:lang="en-US">NA</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GeorgetownKyMember_lbl" xml:lang="en-US">Georgetown Ky [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GraysonKyMember" xlink:label="adc_GraysonKyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GraysonKyMember" xlink:to="adc_GraysonKyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GraysonKyMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GraysonKyMember_lbl" xml:lang="en-US">Grayson, KY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HendersonKyMember" xlink:label="adc_HendersonKyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HendersonKyMember" xlink:to="adc_HendersonKyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HendersonKyMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HendersonKyMember_lbl" xml:lang="en-US">Henderson, KY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LeitchfieldKyMember" xlink:label="adc_LeitchfieldKyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LeitchfieldKyMember" xlink:to="adc_LeitchfieldKyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LeitchfieldKyMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LeitchfieldKyMember_lbl" xml:lang="en-US">Leitchfield, KY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_KentwoodLaMember" xlink:label="adc_KentwoodLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_KentwoodLaMember" xlink:to="adc_KentwoodLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_KentwoodLaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_KentwoodLaMember_lbl" xml:lang="en-US">Kentwood, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LakeCharlesLa3Member" xlink:label="adc_LakeCharlesLa3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LakeCharlesLa3Member" xlink:to="adc_LakeCharlesLa3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LakeCharlesLa3Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LakeCharlesLa3Member_lbl" xml:lang="en-US">Lake Charles, LA 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BowieMdMember" xlink:label="adc_BowieMdMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BowieMdMember" xlink:to="adc_BowieMdMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BowieMdMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BowieMdMember_lbl" xml:lang="en-US">Bowie, MD [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EldersburgMdMember" xlink:label="adc_EldersburgMdMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EldersburgMdMember" xlink:to="adc_EldersburgMdMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_EldersburgMdMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EldersburgMdMember_lbl" xml:lang="en-US">Eldersburg, MD [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BrocktonMaMember" xlink:label="adc_BrocktonMaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BrocktonMaMember" xlink:to="adc_BrocktonMaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BrocktonMaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BrocktonMaMember_lbl" xml:lang="en-US">Brockton, MA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_IpswichMa1Member" xlink:label="adc_IpswichMa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_IpswichMa1Member" xlink:to="adc_IpswichMa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_IpswichMa1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_IpswichMa1Member_lbl" xml:lang="en-US">Ipswich, MA 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_IpswichMa2Member" xlink:label="adc_IpswichMa2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_IpswichMa2Member" xlink:to="adc_IpswichMa2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_IpswichMa2Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_IpswichMa2Member_lbl" xml:lang="en-US">Ipswich, MA 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AdrianMiMember" xlink:label="adc_AdrianMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AdrianMiMember" xlink:to="adc_AdrianMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AdrianMiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AdrianMiMember_lbl" xml:lang="en-US">Adrian, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AlleganMiMember" xlink:label="adc_AlleganMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AlleganMiMember" xlink:to="adc_AlleganMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AlleganMiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AlleganMiMember_lbl" xml:lang="en-US">Allegan, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BloomfieldHillsMi1Member" xlink:label="adc_BloomfieldHillsMi1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BloomfieldHillsMi1Member" xlink:to="adc_BloomfieldHillsMi1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BloomfieldHillsMi1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BloomfieldHillsMi1Member_lbl" xml:lang="en-US">Bloomfield Hills, MI 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CaroMiMember" xlink:label="adc_CaroMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CaroMiMember" xlink:to="adc_CaroMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CaroMiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CaroMiMember_lbl" xml:lang="en-US">Caro, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ClareMiMember" xlink:label="adc_ClareMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ClareMiMember" xlink:to="adc_ClareMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ClareMiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ClareMiMember_lbl" xml:lang="en-US">Clare, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CooksMiMember" xlink:label="adc_CooksMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CooksMiMember" xlink:to="adc_CooksMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CooksMiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CooksMiMember_lbl" xml:lang="en-US">Cooks, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CrystalFallsMiMember" xlink:label="adc_CrystalFallsMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CrystalFallsMiMember" xlink:to="adc_CrystalFallsMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CrystalFallsMiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CrystalFallsMiMember_lbl" xml:lang="en-US">Crystal Falls, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HarrisonMiMember" xlink:label="adc_HarrisonMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HarrisonMiMember" xlink:to="adc_HarrisonMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HarrisonMiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HarrisonMiMember_lbl" xml:lang="en-US">Harrison, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JacksonMi1Member" xlink:label="adc_JacksonMi1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JacksonMi1Member" xlink:to="adc_JacksonMi1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_JacksonMi1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JacksonMi1Member_lbl" xml:lang="en-US">Jackson, MI 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MonroeMiMember" xlink:label="adc_MonroeMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MonroeMiMember" xlink:to="adc_MonroeMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MonroeMiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MonroeMiMember_lbl" xml:lang="en-US">Monroe, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PlymouthMiMember" xlink:label="adc_PlymouthMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PlymouthMiMember" xlink:to="adc_PlymouthMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PlymouthMiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PlymouthMiMember_lbl" xml:lang="en-US">Plymouth, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SpaldingMiMember" xlink:label="adc_SpaldingMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SpaldingMiMember" xlink:to="adc_SpaldingMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SpaldingMiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SpaldingMiMember_lbl" xml:lang="en-US">Spalding, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WalkerMi1Member" xlink:label="adc_WalkerMi1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WalkerMi1Member" xlink:to="adc_WalkerMi1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WalkerMi1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WalkerMi1Member_lbl" xml:lang="en-US">Walker, MI 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LakevilleMnMember" xlink:label="adc_LakevilleMnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LakevilleMnMember" xlink:to="adc_LakevilleMnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LakevilleMnMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LakevilleMnMember_lbl" xml:lang="en-US">Lakeville, MN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LongvilleMnMember" xlink:label="adc_LongvilleMnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LongvilleMnMember" xlink:to="adc_LongvilleMnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LongvilleMnMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LongvilleMnMember_lbl" xml:lang="en-US">Longville, MN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WaiteParkMnMember" xlink:label="adc_WaiteParkMnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WaiteParkMnMember" xlink:to="adc_WaiteParkMnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WaiteParkMnMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WaiteParkMnMember_lbl" xml:lang="en-US">Waite Park, MN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BoltonMsMember" xlink:label="adc_BoltonMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BoltonMsMember" xlink:to="adc_BoltonMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BoltonMsMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BoltonMsMember_lbl" xml:lang="en-US">Bolton, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BruceMsMember" xlink:label="adc_BruceMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BruceMsMember" xlink:to="adc_BruceMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BruceMsMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BruceMsMember_lbl" xml:lang="en-US">Bruce, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ColumbusMs1Member" xlink:label="adc_ColumbusMs1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ColumbusMs1Member" xlink:to="adc_ColumbusMs1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ColumbusMs1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ColumbusMs1Member_lbl" xml:lang="en-US">Columbus, MS 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FlowoodMsMember" xlink:label="adc_FlowoodMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FlowoodMsMember" xlink:to="adc_FlowoodMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FlowoodMsMember_lbl" xml:lang="en-US">Flowood, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HoustonMsMember" xlink:label="adc_HoustonMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HoustonMsMember" xlink:to="adc_HoustonMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HoustonMsMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HoustonMsMember_lbl" xml:lang="en-US">Houston, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JacksonMs4Member" xlink:label="adc_JacksonMs4Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JacksonMs4Member" xlink:to="adc_JacksonMs4Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_JacksonMs4Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JacksonMs4Member_lbl" xml:lang="en-US">Jackson, MS 4 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MichiganCityLamarMsMember" xlink:label="adc_MichiganCityLamarMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MichiganCityLamarMsMember" xlink:to="adc_MichiganCityLamarMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MichiganCityLamarMsMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MichiganCityLamarMsMember_lbl" xml:lang="en-US">Michigan City (Lamar), MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PontotocMsMember" xlink:label="adc_PontotocMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PontotocMsMember" xlink:to="adc_PontotocMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PontotocMsMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PontotocMsMember_lbl" xml:lang="en-US">Pontotoc, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TutwilerMsMember" xlink:label="adc_TutwilerMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TutwilerMsMember" xlink:to="adc_TutwilerMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TutwilerMsMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TutwilerMsMember_lbl" xml:lang="en-US">Tutwiler, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FairPlayMoMember" xlink:label="adc_FairPlayMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FairPlayMoMember" xlink:to="adc_FairPlayMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FairPlayMoMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FairPlayMoMember_lbl" xml:lang="en-US">Fair Play, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FlorissantMo1Member" xlink:label="adc_FlorissantMo1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FlorissantMo1Member" xlink:to="adc_FlorissantMo1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FlorissantMo1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FlorissantMo1Member_lbl" xml:lang="en-US">Florissant, MO 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FlorissantMo2Member" xlink:label="adc_FlorissantMo2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FlorissantMo2Member" xlink:to="adc_FlorissantMo2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FlorissantMo2Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FlorissantMo2Member_lbl" xml:lang="en-US">Florissant, MO 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GrovespringMoMember" xlink:label="adc_GrovespringMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GrovespringMoMember" xlink:to="adc_GrovespringMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GrovespringMoMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GrovespringMoMember_lbl" xml:lang="en-US">Grovespring, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HermitageMoMember" xlink:label="adc_HermitageMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HermitageMoMember" xlink:to="adc_HermitageMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HermitageMoMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HermitageMoMember_lbl" xml:lang="en-US">Hermitage, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MadisonMoMember" xlink:label="adc_MadisonMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MadisonMoMember" xlink:to="adc_MadisonMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MadisonMoMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MadisonMoMember_lbl" xml:lang="en-US">Madison, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OakGroveMoMember" xlink:label="adc_OakGroveMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OakGroveMoMember" xlink:to="adc_OakGroveMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OakGroveMoMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OakGroveMoMember_lbl" xml:lang="en-US">Oak Grove, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SalemMoMember" xlink:label="adc_SalemMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SalemMoMember" xlink:to="adc_SalemMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SalemMoMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SalemMoMember_lbl" xml:lang="en-US">Salem, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SouthForkMoMember" xlink:label="adc_SouthForkMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SouthForkMoMember" xlink:to="adc_SouthForkMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SouthForkMoMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SouthForkMoMember_lbl" xml:lang="en-US">South Fork, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_St.LouisMoMember" xlink:label="adc_St.LouisMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_St.LouisMoMember" xlink:to="adc_St.LouisMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_St.LouisMoMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_St.LouisMoMember_lbl" xml:lang="en-US">St. Louis, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ManchesterHnMember" xlink:label="adc_ManchesterHnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ManchesterHnMember" xlink:to="adc_ManchesterHnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ManchesterHnMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ManchesterHnMember_lbl" xml:lang="en-US">Manchester, HN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NashuaNh1Member" xlink:label="adc_NashuaNh1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NashuaNh1Member" xlink:to="adc_NashuaNh1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NashuaNh1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NashuaNh1Member_lbl" xml:lang="en-US">Nashua, NH 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LanokaHarborNjMember" xlink:label="adc_LanokaHarborNjMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LanokaHarborNjMember" xlink:to="adc_LanokaHarborNjMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LanokaHarborNjMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LanokaHarborNjMember_lbl" xml:lang="en-US">Lanoka Harbor, NJ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ParamusNjMember" xlink:label="adc_ParamusNjMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ParamusNjMember" xlink:to="adc_ParamusNjMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ParamusNjMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ParamusNjMember_lbl" xml:lang="en-US">Paramus, NJ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SanYsidroNmMember" xlink:label="adc_SanYsidroNmMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SanYsidroNmMember" xlink:to="adc_SanYsidroNmMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SanYsidroNmMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SanYsidroNmMember_lbl" xml:lang="en-US">San Ysidro, NM [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HinsdaleNyMember" xlink:label="adc_HinsdaleNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HinsdaleNyMember" xlink:to="adc_HinsdaleNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HinsdaleNyMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HinsdaleNyMember_lbl" xml:lang="en-US">Hinsdale, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LiverpoolNyMember" xlink:label="adc_LiverpoolNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LiverpoolNyMember" xlink:to="adc_LiverpoolNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LiverpoolNyMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LiverpoolNyMember_lbl" xml:lang="en-US">Liverpool, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MaloneNyMember" xlink:label="adc_MaloneNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MaloneNyMember" xlink:to="adc_MaloneNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MaloneNyMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MaloneNyMember_lbl" xml:lang="en-US">Malone, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_VestalNyMember" xlink:label="adc_VestalNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_VestalNyMember" xlink:to="adc_VestalNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_VestalNyMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_VestalNyMember_lbl" xml:lang="en-US">Vestal, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ColumbusNcMember" xlink:label="adc_ColumbusNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ColumbusNcMember" xlink:to="adc_ColumbusNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ColumbusNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ColumbusNcMember_lbl" xml:lang="en-US">Columbus, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FayettevilleNc2Member" xlink:label="adc_FayettevilleNc2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FayettevilleNc2Member" xlink:to="adc_FayettevilleNc2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FayettevilleNc2Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FayettevilleNc2Member_lbl" xml:lang="en-US">Fayetteville, NC 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HopeMillsNcMember" xlink:label="adc_HopeMillsNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HopeMillsNcMember" xlink:to="adc_HopeMillsNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HopeMillsNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HopeMillsNcMember_lbl" xml:lang="en-US">Hope Mills, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_StallingsMatthewsNcMember" xlink:label="adc_StallingsMatthewsNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_StallingsMatthewsNcMember" xlink:to="adc_StallingsMatthewsNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_StallingsMatthewsNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_StallingsMatthewsNcMember_lbl" xml:lang="en-US">Stallings (Matthews), NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SylvaNcMember" xlink:label="adc_SylvaNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SylvaNcMember" xlink:to="adc_SylvaNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SylvaNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SylvaNcMember_lbl" xml:lang="en-US">Sylva, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EdgeleyNdMember" xlink:label="adc_EdgeleyNdMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EdgeleyNdMember" xlink:to="adc_EdgeleyNdMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_EdgeleyNdMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EdgeleyNdMember_lbl" xml:lang="en-US">Edgeley, ND [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GrandForksNd2Member" xlink:label="adc_GrandForksNd2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GrandForksNd2Member" xlink:to="adc_GrandForksNd2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GrandForksNd2Member_lbl" xml:lang="en-US">Grand Forks, ND 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WillistonNdMember" xlink:label="adc_WillistonNdMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WillistonNdMember" xlink:to="adc_WillistonNdMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WillistonNdMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WillistonNdMember_lbl" xml:lang="en-US">Williston, ND [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BataviaUnionTownshipOhMember" xlink:label="adc_BataviaUnionTownshipOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BataviaUnionTownshipOhMember" xlink:to="adc_BataviaUnionTownshipOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BataviaUnionTownshipOhMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BataviaUnionTownshipOhMember_lbl" xml:lang="en-US">Batavia (Union Township), OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BellevueOh1Member" xlink:label="adc_BellevueOh1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BellevueOh1Member" xlink:to="adc_BellevueOh1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BellevueOh1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BellevueOh1Member_lbl" xml:lang="en-US">Bellevue, OH 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ColumbusOh1Member" xlink:label="adc_ColumbusOh1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ColumbusOh1Member" xlink:to="adc_ColumbusOh1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ColumbusOh1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ColumbusOh1Member_lbl" xml:lang="en-US">Columbus, OH 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ConneautOhMember" xlink:label="adc_ConneautOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ConneautOhMember" xlink:to="adc_ConneautOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ConneautOhMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ConneautOhMember_lbl" xml:lang="en-US">Conneaut, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HamiltonOhMember" xlink:label="adc_HamiltonOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HamiltonOhMember" xlink:to="adc_HamiltonOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HamiltonOhMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HamiltonOhMember_lbl" xml:lang="en-US">Hamilton, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HeathOh1Member" xlink:label="adc_HeathOh1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HeathOh1Member" xlink:to="adc_HeathOh1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HeathOh1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HeathOh1Member_lbl" xml:lang="en-US">Heath, OH 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_KentonOhMember" xlink:label="adc_KentonOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_KentonOhMember" xlink:to="adc_KentonOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_KentonOhMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_KentonOhMember_lbl" xml:lang="en-US">Kenton, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MaumeeOhMember" xlink:label="adc_MaumeeOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MaumeeOhMember" xlink:to="adc_MaumeeOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MaumeeOhMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MaumeeOhMember_lbl" xml:lang="en-US">Maumee, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OxfordOhMember" xlink:label="adc_OxfordOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OxfordOhMember" xlink:to="adc_OxfordOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OxfordOhMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OxfordOhMember_lbl" xml:lang="en-US">Oxford, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WestChesterOhMember" xlink:label="adc_WestChesterOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WestChesterOhMember" xlink:to="adc_WestChesterOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WestChesterOhMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WestChesterOhMember_lbl" xml:lang="en-US">West Chester, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WestChesterOh1Member" xlink:label="adc_WestChesterOh1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WestChesterOh1Member" xlink:to="adc_WestChesterOh1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WestChesterOh1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WestChesterOh1Member_lbl" xml:lang="en-US">West Chester, OH 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AdaOkMember" xlink:label="adc_AdaOkMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AdaOkMember" xlink:to="adc_AdaOkMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AdaOkMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AdaOkMember_lbl" xml:lang="en-US">Ada, OK [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BartlesvilleOkMember" xlink:label="adc_BartlesvilleOkMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BartlesvilleOkMember" xlink:to="adc_BartlesvilleOkMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BartlesvilleOkMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BartlesvilleOkMember_lbl" xml:lang="en-US">Bartlesville, OK [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BokosheOkMember" xlink:label="adc_BokosheOkMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BokosheOkMember" xlink:to="adc_BokosheOkMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BokosheOkMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BokosheOkMember_lbl" xml:lang="en-US">Bokoshe, OK [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LawtonOkMember" xlink:label="adc_LawtonOkMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LawtonOkMember" xlink:to="adc_LawtonOkMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LawtonOkMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LawtonOkMember_lbl" xml:lang="en-US">Lawton, OK [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WhitefieldOkMember" xlink:label="adc_WhitefieldOkMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WhitefieldOkMember" xlink:to="adc_WhitefieldOkMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WhitefieldOkMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WhitefieldOkMember_lbl" xml:lang="en-US">Whitefield, OK [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CranberryTownshipPaMember" xlink:label="adc_CranberryTownshipPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CranberryTownshipPaMember" xlink:to="adc_CranberryTownshipPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CranberryTownshipPaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CranberryTownshipPaMember_lbl" xml:lang="en-US">Cranberry Township, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EbensburgPaMember" xlink:label="adc_EbensburgPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EbensburgPaMember" xlink:to="adc_EbensburgPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_EbensburgPaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EbensburgPaMember_lbl" xml:lang="en-US">Ebensburg, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FlourtownPaMember" xlink:label="adc_FlourtownPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FlourtownPaMember" xlink:to="adc_FlourtownPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FlourtownPaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FlourtownPaMember_lbl" xml:lang="en-US">Flourtown, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MonacaPaMember" xlink:label="adc_MonacaPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MonacaPaMember" xlink:to="adc_MonacaPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MonacaPaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MonacaPaMember_lbl" xml:lang="en-US">Monaca, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NatronaHeightsPaMember" xlink:label="adc_NatronaHeightsPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NatronaHeightsPaMember" xlink:to="adc_NatronaHeightsPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NatronaHeightsPaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NatronaHeightsPaMember_lbl" xml:lang="en-US">Natrona Heights, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NorthHuntingdonPaMember" xlink:label="adc_NorthHuntingdonPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NorthHuntingdonPaMember" xlink:to="adc_NorthHuntingdonPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NorthHuntingdonPaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NorthHuntingdonPaMember_lbl" xml:lang="en-US">North Huntingdon, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OakdalePaMember" xlink:label="adc_OakdalePaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OakdalePaMember" xlink:to="adc_OakdalePaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OakdalePaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OakdalePaMember_lbl" xml:lang="en-US">Oakdale, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PhiladelphiaPa2Member" xlink:label="adc_PhiladelphiaPa2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PhiladelphiaPa2Member" xlink:to="adc_PhiladelphiaPa2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PhiladelphiaPa2Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PhiladelphiaPa2Member_lbl" xml:lang="en-US">Philadelphia, PA 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PittsburghPa3Member" xlink:label="adc_PittsburghPa3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PittsburghPa3Member" xlink:to="adc_PittsburghPa3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PittsburghPa3Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PittsburghPa3Member_lbl" xml:lang="en-US">Pittsburgh, PA 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RobinsonTownshipPaMember" xlink:label="adc_RobinsonTownshipPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RobinsonTownshipPaMember" xlink:to="adc_RobinsonTownshipPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RobinsonTownshipPaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RobinsonTownshipPaMember_lbl" xml:lang="en-US">Robinson Township, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TitusvillePaMember" xlink:label="adc_TitusvillePaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TitusvillePaMember" xlink:to="adc_TitusvillePaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TitusvillePaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TitusvillePaMember_lbl" xml:lang="en-US">Titusville, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WestViewPaMember" xlink:label="adc_WestViewPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WestViewPaMember" xlink:to="adc_WestViewPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WestViewPaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WestViewPaMember_lbl" xml:lang="en-US">West View, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_YorkPaMember" xlink:label="adc_YorkPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_YorkPaMember" xlink:to="adc_YorkPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_YorkPaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_YorkPaMember_lbl" xml:lang="en-US">York, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ColumbiaSc2Member" xlink:label="adc_ColumbiaSc2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ColumbiaSc2Member" xlink:to="adc_ColumbiaSc2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ColumbiaSc2Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ColumbiaSc2Member_lbl" xml:lang="en-US">Columbia, SC 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HamptonScMember" xlink:label="adc_HamptonScMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HamptonScMember" xlink:to="adc_HamptonScMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HamptonScMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HamptonScMember_lbl" xml:lang="en-US">Hampton, SC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MyrtleBeachSc1Member" xlink:label="adc_MyrtleBeachSc1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MyrtleBeachSc1Member" xlink:to="adc_MyrtleBeachSc1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MyrtleBeachSc1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MyrtleBeachSc1Member_lbl" xml:lang="en-US">Myrtle Beach, SC 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OrangeburgScMember" xlink:label="adc_OrangeburgScMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OrangeburgScMember" xlink:to="adc_OrangeburgScMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OrangeburgScMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OrangeburgScMember_lbl" xml:lang="en-US">Orangeburg, SC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_KadokaSdMember" xlink:label="adc_KadokaSdMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_KadokaSdMember" xlink:to="adc_KadokaSdMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_KadokaSdMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_KadokaSdMember_lbl" xml:lang="en-US">Kadoka, SD [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ThornHillTnMember" xlink:label="adc_ThornHillTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ThornHillTnMember" xlink:to="adc_ThornHillTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ThornHillTnMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ThornHillTnMember_lbl" xml:lang="en-US">Thorn Hill, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WoodburyTnMember" xlink:label="adc_WoodburyTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WoodburyTnMember" xlink:to="adc_WoodburyTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WoodburyTnMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WoodburyTnMember_lbl" xml:lang="en-US">Woodbury, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BurlesonTxMember" xlink:label="adc_BurlesonTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BurlesonTxMember" xlink:to="adc_BurlesonTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BurlesonTxMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BurlesonTxMember_lbl" xml:lang="en-US">Burleson, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CarrizoSpringsTxMember" xlink:label="adc_CarrizoSpringsTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CarrizoSpringsTxMember" xlink:to="adc_CarrizoSpringsTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CarrizoSpringsTxMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CarrizoSpringsTxMember_lbl" xml:lang="en-US">Carrizo Springs, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GarlandTxMember" xlink:label="adc_GarlandTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GarlandTxMember" xlink:to="adc_GarlandTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GarlandTxMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GarlandTxMember_lbl" xml:lang="en-US">Garland, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_KenedyTxMember" xlink:label="adc_KenedyTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_KenedyTxMember" xlink:to="adc_KenedyTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_KenedyTxMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_KenedyTxMember_lbl" xml:lang="en-US">Kenedy, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BentonArMember" xlink:label="adc_BentonArMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BentonArMember" xlink:to="adc_BentonArMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BentonArMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BentonArMember_lbl" xml:lang="en-US">Benton, AR [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BismarckArMember" xlink:label="adc_BismarckArMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BismarckArMember" xlink:to="adc_BismarckArMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BismarckArMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BismarckArMember_lbl" xml:lang="en-US">Bismarck, AR [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CentertonArMember" xlink:label="adc_CentertonArMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CentertonArMember" xlink:to="adc_CentertonArMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CentertonArMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CentertonArMember_lbl" xml:lang="en-US">Centerton, AR [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ElaineArMember" xlink:label="adc_ElaineArMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ElaineArMember" xlink:to="adc_ElaineArMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ElaineArMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ElaineArMember_lbl" xml:lang="en-US">Elaine, AR [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JonesboroAr1Member" xlink:label="adc_JonesboroAr1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JonesboroAr1Member" xlink:to="adc_JonesboroAr1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_JonesboroAr1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JonesboroAr1Member_lbl" xml:lang="en-US">Jonesboro, AR1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LittleRockAr1Member" xlink:label="adc_LittleRockAr1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LittleRockAr1Member" xlink:to="adc_LittleRockAr1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LittleRockAr1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LittleRockAr1Member_lbl" xml:lang="en-US">Little Rock, AR1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LittleRockAr2Member" xlink:label="adc_LittleRockAr2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LittleRockAr2Member" xlink:to="adc_LittleRockAr2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LittleRockAr2Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LittleRockAr2Member_lbl" xml:lang="en-US">Little Rock, AR2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MayflowerArMember" xlink:label="adc_MayflowerArMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MayflowerArMember" xlink:to="adc_MayflowerArMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MayflowerArMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MayflowerArMember_lbl" xml:lang="en-US">Mayflower, AR [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MenaArMember" xlink:label="adc_MenaArMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MenaArMember" xlink:to="adc_MenaArMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MenaArMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MenaArMember_lbl" xml:lang="en-US">Mena, AR [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PineBluffArMember" xlink:label="adc_PineBluffArMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PineBluffArMember" xlink:to="adc_PineBluffArMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PineBluffArMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PineBluffArMember_lbl" xml:lang="en-US">Pine Bluff, AR [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PineBluffAr1Member" xlink:label="adc_PineBluffAr1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PineBluffAr1Member" xlink:to="adc_PineBluffAr1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PineBluffAr1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PineBluffAr1Member_lbl" xml:lang="en-US">Pine Bluff, AR1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SearcyAr1Member" xlink:label="adc_SearcyAr1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SearcyAr1Member" xlink:to="adc_SearcyAr1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SearcyAr1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SearcyAr1Member_lbl" xml:lang="en-US">Searcy, AR1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SparkmanArMember" xlink:label="adc_SparkmanArMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SparkmanArMember" xlink:to="adc_SparkmanArMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SparkmanArMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SparkmanArMember_lbl" xml:lang="en-US">Sparkman, AR [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WestHelenaArMember" xlink:label="adc_WestHelenaArMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WestHelenaArMember" xlink:to="adc_WestHelenaArMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WestHelenaArMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WestHelenaArMember_lbl" xml:lang="en-US">West Helena, AR [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CoolidgeAzMember" xlink:label="adc_CoolidgeAzMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CoolidgeAzMember" xlink:to="adc_CoolidgeAzMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CoolidgeAzMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CoolidgeAzMember_lbl" xml:lang="en-US">Coolidge, AZ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MaricopaAz1Member" xlink:label="adc_MaricopaAz1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MaricopaAz1Member" xlink:to="adc_MaricopaAz1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MaricopaAz1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MaricopaAz1Member_lbl" xml:lang="en-US">Maricopa, AZ1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PhoenixAzMember" xlink:label="adc_PhoenixAzMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PhoenixAzMember" xlink:to="adc_PhoenixAzMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PhoenixAzMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PhoenixAzMember_lbl" xml:lang="en-US">Phoenix, AZ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TucsonAz1Member" xlink:label="adc_TucsonAz1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TucsonAz1Member" xlink:to="adc_TucsonAz1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TucsonAz1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TucsonAz1Member_lbl" xml:lang="en-US">Tucson, AZ1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_YumaAzMember" xlink:label="adc_YumaAzMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_YumaAzMember" xlink:to="adc_YumaAzMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_YumaAzMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_YumaAzMember_lbl" xml:lang="en-US">Yuma, AZ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_YumaAz1Member" xlink:label="adc_YumaAz1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_YumaAz1Member" xlink:to="adc_YumaAz1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_YumaAz1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_YumaAz1Member_lbl" xml:lang="en-US">Yuma, AZ1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AntiochCaMember" xlink:label="adc_AntiochCaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AntiochCaMember" xlink:to="adc_AntiochCaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AntiochCaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AntiochCaMember_lbl" xml:lang="en-US">Antioch, CA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CalexicoCaMember" xlink:label="adc_CalexicoCaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CalexicoCaMember" xlink:to="adc_CalexicoCaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CalexicoCaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CalexicoCaMember_lbl" xml:lang="en-US">Calexico, CA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HawthorneCaMember" xlink:label="adc_HawthorneCaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HawthorneCaMember" xlink:to="adc_HawthorneCaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HawthorneCaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HawthorneCaMember_lbl" xml:lang="en-US">Hawthorne, CA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NapaCaMember" xlink:label="adc_NapaCaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NapaCaMember" xlink:to="adc_NapaCaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NapaCaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NapaCaMember_lbl" xml:lang="en-US">Napa, CA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PalmdaleCaMember" xlink:label="adc_PalmdaleCaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PalmdaleCaMember" xlink:to="adc_PalmdaleCaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PalmdaleCaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PalmdaleCaMember_lbl" xml:lang="en-US">Palmdale, CA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_QuincyCaMember" xlink:label="adc_QuincyCaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_QuincyCaMember" xlink:to="adc_QuincyCaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_QuincyCaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_QuincyCaMember_lbl" xml:lang="en-US">Quincy, CA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_QuincyCa1Member" xlink:label="adc_QuincyCa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_QuincyCa1Member" xlink:to="adc_QuincyCa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_QuincyCa1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_QuincyCa1Member_lbl" xml:lang="en-US">Quincy, CA1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RanchoCordovaCa1Member" xlink:label="adc_RanchoCordovaCa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RanchoCordovaCa1Member" xlink:to="adc_RanchoCordovaCa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RanchoCordovaCa1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RanchoCordovaCa1Member_lbl" xml:lang="en-US">Rancho Cordova, CA1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SanFranciscoCaMember" xlink:label="adc_SanFranciscoCaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SanFranciscoCaMember" xlink:to="adc_SanFranciscoCaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SanFranciscoCaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SanFranciscoCaMember_lbl" xml:lang="en-US">San Francisco, CA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SignalHillCaMember" xlink:label="adc_SignalHillCaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SignalHillCaMember" xlink:to="adc_SignalHillCaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SignalHillCaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SignalHillCaMember_lbl" xml:lang="en-US">Signal Hill, CA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_StocktonCaMember" xlink:label="adc_StocktonCaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_StocktonCaMember" xlink:to="adc_StocktonCaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_StocktonCaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_StocktonCaMember_lbl" xml:lang="en-US">Stockton, CA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BroomfieldCoMember" xlink:label="adc_BroomfieldCoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BroomfieldCoMember" xlink:to="adc_BroomfieldCoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BroomfieldCoMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BroomfieldCoMember_lbl" xml:lang="en-US">Broomfield, CO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CortezCoMember" xlink:label="adc_CortezCoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CortezCoMember" xlink:to="adc_CortezCoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CortezCoMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CortezCoMember_lbl" xml:lang="en-US">Cortez, CO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LaJuntaCoMember" xlink:label="adc_LaJuntaCoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LaJuntaCoMember" xlink:to="adc_LaJuntaCoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LaJuntaCoMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LaJuntaCoMember_lbl" xml:lang="en-US">La Junta, CO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PuebloCoMember" xlink:label="adc_PuebloCoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PuebloCoMember" xlink:to="adc_PuebloCoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PuebloCoMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PuebloCoMember_lbl" xml:lang="en-US">Pueblo, CO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NewingtonCtMember" xlink:label="adc_NewingtonCtMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NewingtonCtMember" xlink:to="adc_NewingtonCtMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NewingtonCtMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NewingtonCtMember_lbl" xml:lang="en-US">Newington, CT [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OldSaybrookCtMember" xlink:label="adc_OldSaybrookCtMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OldSaybrookCtMember" xlink:to="adc_OldSaybrookCtMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OldSaybrookCtMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OldSaybrookCtMember_lbl" xml:lang="en-US">Old Saybrook, CT [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_StaffordSpringsCtMember" xlink:label="adc_StaffordSpringsCtMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_StaffordSpringsCtMember" xlink:to="adc_StaffordSpringsCtMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_StaffordSpringsCtMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_StaffordSpringsCtMember_lbl" xml:lang="en-US">Stafford Springs, CT [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LaredoTxMember" xlink:label="adc_LaredoTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LaredoTxMember" xlink:to="adc_LaredoTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LaredoTxMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LaredoTxMember_lbl" xml:lang="en-US">Laredo, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LewisvilleTxMember" xlink:label="adc_LewisvilleTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LewisvilleTxMember" xlink:to="adc_LewisvilleTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LewisvilleTxMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LewisvilleTxMember_lbl" xml:lang="en-US">Lewisville, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LubbockTx1Member" xlink:label="adc_LubbockTx1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LubbockTx1Member" xlink:to="adc_LubbockTx1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LubbockTx1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LubbockTx1Member_lbl" xml:lang="en-US">Lubbock, TX 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WichitaFallsTxMember" xlink:label="adc_WichitaFallsTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WichitaFallsTxMember" xlink:to="adc_WichitaFallsTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WichitaFallsTxMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WichitaFallsTxMember_lbl" xml:lang="en-US">Wichita Falls, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WylieTxMember" xlink:label="adc_WylieTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WylieTxMember" xlink:to="adc_WylieTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WylieTxMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WylieTxMember_lbl" xml:lang="en-US">Wylie, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DraperUtMember" xlink:label="adc_DraperUtMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DraperUtMember" xlink:to="adc_DraperUtMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DraperUtMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DraperUtMember_lbl" xml:lang="en-US">Draper, UT [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BristolVaMember" xlink:label="adc_BristolVaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BristolVaMember" xlink:to="adc_BristolVaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BristolVaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BristolVaMember_lbl" xml:lang="en-US">Bristol, VA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GloucesterVaMember" xlink:label="adc_GloucesterVaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GloucesterVaMember" xlink:to="adc_GloucesterVaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GloucesterVaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GloucesterVaMember_lbl" xml:lang="en-US">Gloucester, VA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HamptonVa1Member" xlink:label="adc_HamptonVa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HamptonVa1Member" xlink:to="adc_HamptonVa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HamptonVa1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HamptonVa1Member_lbl" xml:lang="en-US">Hampton, VA 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HamptonVa2Member" xlink:label="adc_HamptonVa2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HamptonVa2Member" xlink:to="adc_HamptonVa2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HamptonVa2Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HamptonVa2Member_lbl" xml:lang="en-US">Hampton, VA 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HamptonVa3Member" xlink:label="adc_HamptonVa3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HamptonVa3Member" xlink:to="adc_HamptonVa3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HamptonVa3Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HamptonVa3Member_lbl" xml:lang="en-US">Hampton, VA 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HamptonVa4Member" xlink:label="adc_HamptonVa4Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HamptonVa4Member" xlink:to="adc_HamptonVa4Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HamptonVa4Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HamptonVa4Member_lbl" xml:lang="en-US">Hampton, VA 4 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NewportNewsVa1Member" xlink:label="adc_NewportNewsVa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NewportNewsVa1Member" xlink:to="adc_NewportNewsVa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NewportNewsVa1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NewportNewsVa1Member_lbl" xml:lang="en-US">Newport News, VA 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NewportNewsVa2Member" xlink:label="adc_NewportNewsVa2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NewportNewsVa2Member" xlink:to="adc_NewportNewsVa2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NewportNewsVa2Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NewportNewsVa2Member_lbl" xml:lang="en-US">Newport News, VA 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PoquosonVaMember" xlink:label="adc_PoquosonVaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PoquosonVaMember" xlink:to="adc_PoquosonVaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PoquosonVaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PoquosonVaMember_lbl" xml:lang="en-US">Poquoson, VA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SouthBostonVaMember" xlink:label="adc_SouthBostonVaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SouthBostonVaMember" xlink:to="adc_SouthBostonVaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SouthBostonVaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SouthBostonVaMember_lbl" xml:lang="en-US">South Boston, VA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SurryVaMember" xlink:label="adc_SurryVaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SurryVaMember" xlink:to="adc_SurryVaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SurryVaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SurryVaMember_lbl" xml:lang="en-US">Surry, VA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WilliamsburgVaMember" xlink:label="adc_WilliamsburgVaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WilliamsburgVaMember" xlink:to="adc_WilliamsburgVaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WilliamsburgVaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WilliamsburgVaMember_lbl" xml:lang="en-US">Williamsburg, VA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WilliamsburgVa1Member" xlink:label="adc_WilliamsburgVa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WilliamsburgVa1Member" xlink:to="adc_WilliamsburgVa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WilliamsburgVa1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WilliamsburgVa1Member_lbl" xml:lang="en-US">Williamsburg, VA 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WythevilleVaMember" xlink:label="adc_WythevilleVaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WythevilleVaMember" xlink:to="adc_WythevilleVaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WythevilleVaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WythevilleVaMember_lbl" xml:lang="en-US">Wytheville, VA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EphrataWaMember" xlink:label="adc_EphrataWaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EphrataWaMember" xlink:to="adc_EphrataWaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_EphrataWaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EphrataWaMember_lbl" xml:lang="en-US">Ephrata, WA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CharlestonWvMember" xlink:label="adc_CharlestonWvMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CharlestonWvMember" xlink:to="adc_CharlestonWvMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CharlestonWvMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CharlestonWvMember_lbl" xml:lang="en-US">Charleston, WV [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RipleyWvMember" xlink:label="adc_RipleyWvMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RipleyWvMember" xlink:to="adc_RipleyWvMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RipleyWvMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RipleyWvMember_lbl" xml:lang="en-US">Ripley, WV [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BlackRiverFallsWiMember" xlink:label="adc_BlackRiverFallsWiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BlackRiverFallsWiMember" xlink:to="adc_BlackRiverFallsWiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BlackRiverFallsWiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BlackRiverFallsWiMember_lbl" xml:lang="en-US">Black River Falls, WI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LakeGenevaWiMember" xlink:label="adc_LakeGenevaWiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LakeGenevaWiMember" xlink:to="adc_LakeGenevaWiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LakeGenevaWiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LakeGenevaWiMember_lbl" xml:lang="en-US">Lake Geneva, WI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MenomoneeFallsWiMember" xlink:label="adc_MenomoneeFallsWiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MenomoneeFallsWiMember" xlink:to="adc_MenomoneeFallsWiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MenomoneeFallsWiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MenomoneeFallsWiMember_lbl" xml:lang="en-US">Menomonee Falls, WI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SunPrairieWiMember" xlink:label="adc_SunPrairieWiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SunPrairieWiMember" xlink:to="adc_SunPrairieWiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SunPrairieWiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SunPrairieWiMember_lbl" xml:lang="en-US">Sun Prairie, WI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WestMilwaukeeWiMember" xlink:label="adc_WestMilwaukeeWiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WestMilwaukeeWiMember" xlink:to="adc_WestMilwaukeeWiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WestMilwaukeeWiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WestMilwaukeeWiMember_lbl" xml:lang="en-US">West Milwaukee, WI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AdgerAlMember" xlink:label="adc_AdgerAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AdgerAlMember" xlink:to="adc_AdgerAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AdgerAlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AdgerAlMember_lbl" xml:lang="en-US">Adger, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DothanAlMember" xlink:label="adc_DothanAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DothanAlMember" xlink:to="adc_DothanAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DothanAlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DothanAlMember_lbl" xml:lang="en-US">Dothan, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EnterpriseAlMember" xlink:label="adc_EnterpriseAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EnterpriseAlMember" xlink:to="adc_EnterpriseAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_EnterpriseAlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EnterpriseAlMember_lbl" xml:lang="en-US">Enterprise, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LanettAlMember" xlink:label="adc_LanettAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LanettAlMember" xlink:to="adc_LanettAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LanettAlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LanettAlMember_lbl" xml:lang="en-US">Lanett, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SaralandAlMember" xlink:label="adc_SaralandAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SaralandAlMember" xlink:to="adc_SaralandAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SaralandAlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SaralandAlMember_lbl" xml:lang="en-US">Saraland, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SylacaugaAlMember" xlink:label="adc_SylacaugaAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SylacaugaAlMember" xlink:to="adc_SylacaugaAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SylacaugaAlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SylacaugaAlMember_lbl" xml:lang="en-US">Sylacauga, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TheodoreAlMember" xlink:label="adc_TheodoreAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TheodoreAlMember" xlink:to="adc_TheodoreAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TheodoreAlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TheodoreAlMember_lbl" xml:lang="en-US">Theodore, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TheodoreAl1Member" xlink:label="adc_TheodoreAl1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TheodoreAl1Member" xlink:to="adc_TheodoreAl1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TheodoreAl1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TheodoreAl1Member_lbl" xml:lang="en-US">Theodore, AL 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AltheimerArMember" xlink:label="adc_AltheimerArMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AltheimerArMember" xlink:to="adc_AltheimerArMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AltheimerArMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AltheimerArMember_lbl" xml:lang="en-US">Altheimer, AR [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BentonAr1Member" xlink:label="adc_BentonAr1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BentonAr1Member" xlink:to="adc_BentonAr1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BentonAr1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BentonAr1Member_lbl" xml:lang="en-US">Benton, AR1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DavenportFlMember" xlink:label="adc_DavenportFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DavenportFlMember" xlink:to="adc_DavenportFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DavenportFlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DavenportFlMember_lbl" xml:lang="en-US">Davenport, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DeerfieldBeachFlMember" xlink:label="adc_DeerfieldBeachFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DeerfieldBeachFlMember" xlink:to="adc_DeerfieldBeachFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DeerfieldBeachFlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DeerfieldBeachFlMember_lbl" xml:lang="en-US">Deerfield Beach, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LakePlacidFl1Member" xlink:label="adc_LakePlacidFl1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LakePlacidFl1Member" xlink:to="adc_LakePlacidFl1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LakePlacidFl1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LakePlacidFl1Member_lbl" xml:lang="en-US">Lake Placid, Fl1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LabelleFlMember" xlink:label="adc_LabelleFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LabelleFlMember" xlink:to="adc_LabelleFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LabelleFlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LabelleFlMember_lbl" xml:lang="en-US">Labelle, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LeesburgFlMember" xlink:label="adc_LeesburgFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LeesburgFlMember" xlink:to="adc_LeesburgFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LeesburgFlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LeesburgFlMember_lbl" xml:lang="en-US">Leesburg, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MadisonFlMember" xlink:label="adc_MadisonFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MadisonFlMember" xlink:to="adc_MadisonFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MadisonFlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MadisonFlMember_lbl" xml:lang="en-US">Madison, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OrlandoFllMember" xlink:label="adc_OrlandoFllMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OrlandoFllMember" xlink:to="adc_OrlandoFllMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OrlandoFllMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OrlandoFllMember_lbl" xml:lang="en-US">Orlando, FL1[Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PanamaCityFlMember" xlink:label="adc_PanamaCityFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PanamaCityFlMember" xlink:to="adc_PanamaCityFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PanamaCityFlMember_lbl" xml:lang="en-US">n//a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PanamaCityFlMember_lbl" xml:lang="en-US">Panama City, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PensacolaFl4Member" xlink:label="adc_PensacolaFl4Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PensacolaFl4Member" xlink:to="adc_PensacolaFl4Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PensacolaFl4Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PensacolaFl4Member_lbl" xml:lang="en-US">Pensacola, FL4 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PortSt.LucieFlMember" xlink:label="adc_PortSt.LucieFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PortSt.LucieFlMember" xlink:to="adc_PortSt.LucieFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PortSt.LucieFlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PortSt.LucieFlMember_lbl" xml:lang="en-US">Port St. Lucie, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PuntaGordaFlMember" xlink:label="adc_PuntaGordaFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PuntaGordaFlMember" xlink:to="adc_PuntaGordaFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PuntaGordaFlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PuntaGordaFlMember_lbl" xml:lang="en-US">Punta Gorda, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SebringFlMember" xlink:label="adc_SebringFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SebringFlMember" xlink:to="adc_SebringFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SebringFlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SebringFlMember_lbl" xml:lang="en-US">Sebring, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_VeniceFl1Member" xlink:label="adc_VeniceFl1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_VeniceFl1Member" xlink:to="adc_VeniceFl1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_VeniceFl1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_VeniceFl1Member_lbl" xml:lang="en-US">Venice, FL1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_VeroBeachFl2Member" xlink:label="adc_VeroBeachFl2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_VeroBeachFl2Member" xlink:to="adc_VeroBeachFl2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_VeroBeachFl2Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_VeroBeachFl2Member_lbl" xml:lang="en-US">Vero Beach, FL2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AlbanyGa2Member" xlink:label="adc_AlbanyGa2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AlbanyGa2Member" xlink:to="adc_AlbanyGa2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AlbanyGa2Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AlbanyGa2Member_lbl" xml:lang="en-US">Albany, GA2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AlbanyGa3Member" xlink:label="adc_AlbanyGa3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AlbanyGa3Member" xlink:to="adc_AlbanyGa3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AlbanyGa3Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AlbanyGa3Member_lbl" xml:lang="en-US">Albany, GA3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AlbanyGa4Member" xlink:label="adc_AlbanyGa4Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AlbanyGa4Member" xlink:to="adc_AlbanyGa4Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AlbanyGa4Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AlbanyGa4Member_lbl" xml:lang="en-US">Albany, GA4 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AmericusGa1Member" xlink:label="adc_AmericusGa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AmericusGa1Member" xlink:to="adc_AmericusGa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AmericusGa1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AmericusGa1Member_lbl" xml:lang="en-US">Americus, GA1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CairoGaMember" xlink:label="adc_CairoGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CairoGaMember" xlink:to="adc_CairoGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CairoGaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CairoGaMember_lbl" xml:lang="en-US">Cairo, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DallasGaMember" xlink:label="adc_DallasGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DallasGaMember" xlink:to="adc_DallasGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DallasGaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DallasGaMember_lbl" xml:lang="en-US">Dallas, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DoravilleGa1Member" xlink:label="adc_DoravilleGa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DoravilleGa1Member" xlink:to="adc_DoravilleGa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DoravilleGa1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DoravilleGa1Member_lbl" xml:lang="en-US">Doraville, GA1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FloweryBranchGaMember" xlink:label="adc_FloweryBranchGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FloweryBranchGaMember" xlink:to="adc_FloweryBranchGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FloweryBranchGaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FloweryBranchGaMember_lbl" xml:lang="en-US">Flowery Branch, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JesupGaMember" xlink:label="adc_JesupGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JesupGaMember" xlink:to="adc_JesupGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_JesupGaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JesupGaMember_lbl" xml:lang="en-US">Jesup, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LawrencevilleGaMember" xlink:label="adc_LawrencevilleGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LawrencevilleGaMember" xlink:to="adc_LawrencevilleGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LawrencevilleGaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LawrencevilleGaMember_lbl" xml:lang="en-US">Lawrenceville, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LithiaSpringsGaMember" xlink:label="adc_LithiaSpringsGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LithiaSpringsGaMember" xlink:to="adc_LithiaSpringsGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LithiaSpringsGaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LithiaSpringsGaMember_lbl" xml:lang="en-US">Lithia Springs, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MoultrieGaMember" xlink:label="adc_MoultrieGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MoultrieGaMember" xlink:to="adc_MoultrieGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MoultrieGaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MoultrieGaMember_lbl" xml:lang="en-US">Moultrie, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_QuitmanGaMember" xlink:label="adc_QuitmanGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_QuitmanGaMember" xlink:to="adc_QuitmanGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_QuitmanGaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_QuitmanGaMember_lbl" xml:lang="en-US">Quitman, GA [member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SavannahGa1Member" xlink:label="adc_SavannahGa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SavannahGa1Member" xlink:to="adc_SavannahGa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SavannahGa1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SavannahGa1Member_lbl" xml:lang="en-US">Savannah, GA1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SavannahGa2Member" xlink:label="adc_SavannahGa2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SavannahGa2Member" xlink:to="adc_SavannahGa2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SavannahGa2Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SavannahGa2Member_lbl" xml:lang="en-US">Savannah, GA2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GeorgeIaMember" xlink:label="adc_GeorgeIaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GeorgeIaMember" xlink:to="adc_GeorgeIaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GeorgeIaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GeorgeIaMember_lbl" xml:lang="en-US">George, IA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GraettingerIaMember" xlink:label="adc_GraettingerIaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GraettingerIaMember" xlink:to="adc_GraettingerIaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GraettingerIaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GraettingerIaMember_lbl" xml:lang="en-US">Graettinger, IA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AlexisIlMember" xlink:label="adc_AlexisIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AlexisIlMember" xlink:to="adc_AlexisIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AlexisIlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AlexisIlMember_lbl" xml:lang="en-US">Alexis, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChicagoIl4Member" xlink:label="adc_ChicagoIl4Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChicagoIl4Member" xlink:to="adc_ChicagoIl4Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ChicagoIl4Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChicagoIl4Member_lbl" xml:lang="en-US">Chicago, IL4 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChicagoIl5Member" xlink:label="adc_ChicagoIl5Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChicagoIl5Member" xlink:to="adc_ChicagoIl5Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ChicagoIl5Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChicagoIl5Member_lbl" xml:lang="en-US">Chicago, IL5 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChicagoIl6Member" xlink:label="adc_ChicagoIl6Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChicagoIl6Member" xlink:to="adc_ChicagoIl6Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ChicagoIl6Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChicagoIl6Member_lbl" xml:lang="en-US">Chicago, IL6 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChicagoIl7Member" xlink:label="adc_ChicagoIl7Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChicagoIl7Member" xlink:to="adc_ChicagoIl7Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ChicagoIl7Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChicagoIl7Member_lbl" xml:lang="en-US">Chicago, IL7 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EastAltonIlMember" xlink:label="adc_EastAltonIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EastAltonIlMember" xlink:to="adc_EastAltonIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_EastAltonIlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EastAltonIlMember_lbl" xml:lang="en-US">East Alton, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FairfieldIlMember" xlink:label="adc_FairfieldIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FairfieldIlMember" xlink:to="adc_FairfieldIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FairfieldIlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FairfieldIlMember_lbl" xml:lang="en-US">Fairfield, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GrayslakeIlMember" xlink:label="adc_GrayslakeIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GrayslakeIlMember" xlink:to="adc_GrayslakeIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GrayslakeIlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GrayslakeIlMember_lbl" xml:lang="en-US">Grayslake, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HomewoodIlMember" xlink:label="adc_HomewoodIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HomewoodIlMember" xlink:to="adc_HomewoodIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HomewoodIlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HomewoodIlMember_lbl" xml:lang="en-US">Homewood, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_KankakeeIlMember" xlink:label="adc_KankakeeIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_KankakeeIlMember" xlink:to="adc_KankakeeIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_KankakeeIlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_KankakeeIlMember_lbl" xml:lang="en-US">Kankakee, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MantenoIlMember" xlink:label="adc_MantenoIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MantenoIlMember" xlink:to="adc_MantenoIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MantenoIlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MantenoIlMember_lbl" xml:lang="en-US">Manteno, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OswegoIlMember" xlink:label="adc_OswegoIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OswegoIlMember" xlink:to="adc_OswegoIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OswegoIlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OswegoIlMember_lbl" xml:lang="en-US">Oswego, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RocktonIlMember" xlink:label="adc_RocktonIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RocktonIlMember" xlink:to="adc_RocktonIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RocktonIlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RocktonIlMember_lbl" xml:lang="en-US">Rockton, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ElkhartInMember" xlink:label="adc_ElkhartInMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ElkhartInMember" xlink:to="adc_ElkhartInMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ElkhartInMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ElkhartInMember_lbl" xml:lang="en-US">Elkhart, IN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FranklinInMember" xlink:label="adc_FranklinInMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FranklinInMember" xlink:to="adc_FranklinInMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FranklinInMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FranklinInMember_lbl" xml:lang="en-US">Franklin, IN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_IndianapolisIn1Member" xlink:label="adc_IndianapolisIn1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_IndianapolisIn1Member" xlink:to="adc_IndianapolisIn1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_IndianapolisIn1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_IndianapolisIn1Member_lbl" xml:lang="en-US">Indianapolis, IN1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NoblesvilleInMember" xlink:label="adc_NoblesvilleInMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NoblesvilleInMember" xlink:to="adc_NoblesvilleInMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NoblesvilleInMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NoblesvilleInMember_lbl" xml:lang="en-US">Noblesville, IN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PeruInMember" xlink:label="adc_PeruInMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PeruInMember" xlink:to="adc_PeruInMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PeruInMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PeruInMember_lbl" xml:lang="en-US">Peru, IN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RockvilleInMember" xlink:label="adc_RockvilleInMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RockvilleInMember" xlink:to="adc_RockvilleInMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RockvilleInMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RockvilleInMember_lbl" xml:lang="en-US">Rockville, IN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DerbyKsMember" xlink:label="adc_DerbyKsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DerbyKsMember" xlink:to="adc_DerbyKsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DerbyKsMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DerbyKsMember_lbl" xml:lang="en-US">Derby, KS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_IndependenceKsMember" xlink:label="adc_IndependenceKsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_IndependenceKsMember" xlink:to="adc_IndependenceKsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_IndependenceKsMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_IndependenceKsMember_lbl" xml:lang="en-US">Independence, KS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ShwaneeKs1Member" xlink:label="adc_ShwaneeKs1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ShwaneeKs1Member" xlink:to="adc_ShwaneeKs1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ShwaneeKs1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ShwaneeKs1Member_lbl" xml:lang="en-US">Shwanee, KS 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WichitaKs1Member" xlink:label="adc_WichitaKs1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WichitaKs1Member" xlink:to="adc_WichitaKs1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WichitaKs1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WichitaKs1Member_lbl" xml:lang="en-US">Wichita, KS1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WichitaKs2Member" xlink:label="adc_WichitaKs2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WichitaKs2Member" xlink:to="adc_WichitaKs2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WichitaKs2Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WichitaKs2Member_lbl" xml:lang="en-US">Wichita, KS2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WichitaKs3Member" xlink:label="adc_WichitaKs3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WichitaKs3Member" xlink:to="adc_WichitaKs3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WichitaKs3Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WichitaKs3Member_lbl" xml:lang="en-US">Wichita, KS3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WichitaKs4Member" xlink:label="adc_WichitaKs4Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WichitaKs4Member" xlink:to="adc_WichitaKs4Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WichitaKs4Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WichitaKs4Member_lbl" xml:lang="en-US">Wichita, KS4 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LouisaKyMember" xlink:label="adc_LouisaKyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LouisaKyMember" xlink:to="adc_LouisaKyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LouisaKyMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LouisaKyMember_lbl" xml:lang="en-US">Louisa, KY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LouisvilleKyMember" xlink:label="adc_LouisvilleKyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LouisvilleKyMember" xlink:to="adc_LouisvilleKyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LouisvilleKyMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LouisvilleKyMember_lbl" xml:lang="en-US">Louisville, KY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LouisvilleKy1Member" xlink:label="adc_LouisvilleKy1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LouisvilleKy1Member" xlink:to="adc_LouisvilleKy1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LouisvilleKy1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LouisvilleKy1Member_lbl" xml:lang="en-US">Louisville, KY1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AmiteCityLaMember" xlink:label="adc_AmiteCityLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AmiteCityLaMember" xlink:to="adc_AmiteCityLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AmiteCityLaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AmiteCityLaMember_lbl" xml:lang="en-US">Amite City, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BatonRougeLa1Member" xlink:label="adc_BatonRougeLa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BatonRougeLa1Member" xlink:to="adc_BatonRougeLa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BatonRougeLa1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BatonRougeLa1Member_lbl" xml:lang="en-US">Baton Rouge, LA1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DenhamSpringsLaMember" xlink:label="adc_DenhamSpringsLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DenhamSpringsLaMember" xlink:to="adc_DenhamSpringsLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DenhamSpringsLaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DenhamSpringsLaMember_lbl" xml:lang="en-US">Denham Springs, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DequincyLa1Member" xlink:label="adc_DequincyLa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DequincyLa1Member" xlink:to="adc_DequincyLa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DequincyLa1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DequincyLa1Member_lbl" xml:lang="en-US">Dequincy, LA1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GibsonLaMember" xlink:label="adc_GibsonLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GibsonLaMember" xlink:to="adc_GibsonLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GibsonLaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GibsonLaMember_lbl" xml:lang="en-US">Gibson, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GonzalesLaMember" xlink:label="adc_GonzalesLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GonzalesLaMember" xlink:to="adc_GonzalesLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GonzalesLaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GonzalesLaMember_lbl" xml:lang="en-US">Gonzales, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HammondLaMember" xlink:label="adc_HammondLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HammondLaMember" xlink:to="adc_HammondLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HammondLaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HammondLaMember_lbl" xml:lang="en-US">Hammond, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LaplaceLaMember" xlink:label="adc_LaplaceLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LaplaceLaMember" xlink:to="adc_LaplaceLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LaplaceLaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LaplaceLaMember_lbl" xml:lang="en-US">Laplace, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SpringhillLaMember" xlink:label="adc_SpringhillLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SpringhillLaMember" xlink:to="adc_SpringhillLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SpringhillLaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SpringhillLaMember_lbl" xml:lang="en-US">Springhill, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DorchesterMaMember" xlink:label="adc_DorchesterMaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DorchesterMaMember" xlink:to="adc_DorchesterMaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DorchesterMaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DorchesterMaMember_lbl" xml:lang="en-US">Dorchester, MA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EastWarehamMaMember" xlink:label="adc_EastWarehamMaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EastWarehamMaMember" xlink:to="adc_EastWarehamMaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_EastWarehamMaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EastWarehamMaMember_lbl" xml:lang="en-US">East Wareham, MA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PittsfieldMaMember" xlink:label="adc_PittsfieldMaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PittsfieldMaMember" xlink:to="adc_PittsfieldMaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PittsfieldMaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PittsfieldMaMember_lbl" xml:lang="en-US">Pittsfield, MA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PittsfieldMa1Member" xlink:label="adc_PittsfieldMa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PittsfieldMa1Member" xlink:to="adc_PittsfieldMa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PittsfieldMa1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PittsfieldMa1Member_lbl" xml:lang="en-US">Pittsfield, MA1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TauntonMaMember" xlink:label="adc_TauntonMaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TauntonMaMember" xlink:to="adc_TauntonMaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TauntonMaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TauntonMaMember_lbl" xml:lang="en-US">Taunton, MA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AberdeenMdMember" xlink:label="adc_AberdeenMdMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AberdeenMdMember" xlink:to="adc_AberdeenMdMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AberdeenMdMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AberdeenMdMember_lbl" xml:lang="en-US">Aberdeen, MD [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BaltimoreMd3Member" xlink:label="adc_BaltimoreMd3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BaltimoreMd3Member" xlink:to="adc_BaltimoreMd3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BaltimoreMd3Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BaltimoreMd3Member_lbl" xml:lang="en-US">Baltimore, MD3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CockeysvilleMdMember" xlink:label="adc_CockeysvilleMdMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CockeysvilleMdMember" xlink:to="adc_CockeysvilleMdMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CockeysvilleMdMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CockeysvilleMdMember_lbl" xml:lang="en-US">Cockeysville, MD [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HagerstownMdMember" xlink:label="adc_HagerstownMdMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HagerstownMdMember" xlink:to="adc_HagerstownMdMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HagerstownMdMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HagerstownMdMember_lbl" xml:lang="en-US">Hagerstown, MD [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OwingsMillsMdMember" xlink:label="adc_OwingsMillsMdMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OwingsMillsMdMember" xlink:to="adc_OwingsMillsMdMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OwingsMillsMdMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OwingsMillsMdMember_lbl" xml:lang="en-US">Owings Mills, MD [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AugustaMeMember" xlink:label="adc_AugustaMeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AugustaMeMember" xlink:to="adc_AugustaMeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AugustaMeMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AugustaMeMember_lbl" xml:lang="en-US">Augusta, ME [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BentonHarborMiMember" xlink:label="adc_BentonHarborMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BentonHarborMiMember" xlink:to="adc_BentonHarborMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BentonHarborMiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BentonHarborMiMember_lbl" xml:lang="en-US">Benton Harbor, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CedarSpringsMiMember" xlink:label="adc_CedarSpringsMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CedarSpringsMiMember" xlink:to="adc_CedarSpringsMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CedarSpringsMiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CedarSpringsMiMember_lbl" xml:lang="en-US">Cedar Springs, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GraylingMiMember" xlink:label="adc_GraylingMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GraylingMiMember" xlink:to="adc_GraylingMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GraylingMiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GraylingMiMember_lbl" xml:lang="en-US">Grayling, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HartMiMember" xlink:label="adc_HartMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HartMiMember" xlink:to="adc_HartMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HartMiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HartMiMember_lbl" xml:lang="en-US">Hart, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HollandMiMember" xlink:label="adc_HollandMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HollandMiMember" xlink:to="adc_HollandMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HollandMiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HollandMiMember_lbl" xml:lang="en-US">Holland, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HowellMiMember" xlink:label="adc_HowellMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HowellMiMember" xlink:to="adc_HowellMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HowellMiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HowellMiMember_lbl" xml:lang="en-US">Howell, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JonesvilleMMember" xlink:label="adc_JonesvilleMMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JonesvilleMMember" xlink:to="adc_JonesvilleMMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_JonesvilleMMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JonesvilleMMember_lbl" xml:lang="en-US">Jonesville, M [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MonroeMi1Member" xlink:label="adc_MonroeMi1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MonroeMi1Member" xlink:to="adc_MonroeMi1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MonroeMi1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MonroeMi1Member_lbl" xml:lang="en-US">Monroe, MI1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OmerMiMember" xlink:label="adc_OmerMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OmerMiMember" xlink:to="adc_OmerMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OmerMiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OmerMiMember_lbl" xml:lang="en-US">Omer, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OwossoMiMember" xlink:label="adc_OwossoMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OwossoMiMember" xlink:to="adc_OwossoMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OwossoMiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OwossoMiMember_lbl" xml:lang="en-US">Owosso, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TaylorMiMember" xlink:label="adc_TaylorMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TaylorMiMember" xlink:to="adc_TaylorMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TaylorMiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TaylorMiMember_lbl" xml:lang="en-US">Taylor, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TraverseCityMiMember" xlink:label="adc_TraverseCityMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TraverseCityMiMember" xlink:to="adc_TraverseCityMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TraverseCityMiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TraverseCityMiMember_lbl" xml:lang="en-US">Traverse City, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AppleValleyMnMember" xlink:label="adc_AppleValleyMnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AppleValleyMnMember" xlink:to="adc_AppleValleyMnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AppleValleyMnMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AppleValleyMnMember_lbl" xml:lang="en-US">Apple Valley, MN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BlaineMnMember" xlink:label="adc_BlaineMnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BlaineMnMember" xlink:to="adc_BlaineMnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BlaineMnMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BlaineMnMember_lbl" xml:lang="en-US">Blaine, MN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChanhassenMnMember" xlink:label="adc_ChanhassenMnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChanhassenMnMember" xlink:to="adc_ChanhassenMnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ChanhassenMnMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChanhassenMnMember_lbl" xml:lang="en-US">Chanhassen, MN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GlyndonMnMember" xlink:label="adc_GlyndonMnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GlyndonMnMember" xlink:to="adc_GlyndonMnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GlyndonMnMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GlyndonMnMember_lbl" xml:lang="en-US">Glyndon, MN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HillCityMnMember" xlink:label="adc_HillCityMnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HillCityMnMember" xlink:to="adc_HillCityMnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HillCityMnMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HillCityMnMember_lbl" xml:lang="en-US">Hill City, MN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HoldingfordMnMember" xlink:label="adc_HoldingfordMnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HoldingfordMnMember" xlink:to="adc_HoldingfordMnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HoldingfordMnMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HoldingfordMnMember_lbl" xml:lang="en-US">Holdingford, MN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OttertailMnMember" xlink:label="adc_OttertailMnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OttertailMnMember" xlink:to="adc_OttertailMnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OttertailMnMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OttertailMnMember_lbl" xml:lang="en-US">Ottertail, MN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ArnoldMoMember" xlink:label="adc_ArnoldMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ArnoldMoMember" xlink:to="adc_ArnoldMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ArnoldMoMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ArnoldMoMember_lbl" xml:lang="en-US">Arnold, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LeetonMoMember" xlink:label="adc_LeetonMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LeetonMoMember" xlink:to="adc_LeetonMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LeetonMoMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LeetonMoMember_lbl" xml:lang="en-US">Leeton, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LibertyMo1Member" xlink:label="adc_LibertyMo1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LibertyMo1Member" xlink:to="adc_LibertyMo1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LibertyMo1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LibertyMo1Member_lbl" xml:lang="en-US">Liberty, MO1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NorthmoorMoMember" xlink:label="adc_NorthmoorMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NorthmoorMoMember" xlink:to="adc_NorthmoorMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NorthmoorMoMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NorthmoorMoMember_lbl" xml:lang="en-US">Northmoor, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PlatteCityMoMember" xlink:label="adc_PlatteCityMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PlatteCityMoMember" xlink:to="adc_PlatteCityMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PlatteCityMoMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PlatteCityMoMember_lbl" xml:lang="en-US">Platte City, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RichmondHeightsMoMember" xlink:label="adc_RichmondHeightsMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RichmondHeightsMoMember" xlink:to="adc_RichmondHeightsMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RichmondHeightsMoMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RichmondHeightsMoMember_lbl" xml:lang="en-US">Richmond Heights, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SheldonMoMember" xlink:label="adc_SheldonMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SheldonMoMember" xlink:to="adc_SheldonMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SheldonMoMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SheldonMoMember_lbl" xml:lang="en-US">Sheldon, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ThayerMoMember" xlink:label="adc_ThayerMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ThayerMoMember" xlink:to="adc_ThayerMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ThayerMoMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ThayerMoMember_lbl" xml:lang="en-US">Thayer, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_UnionMoMember" xlink:label="adc_UnionMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_UnionMoMember" xlink:to="adc_UnionMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_UnionMoMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_UnionMoMember_lbl" xml:lang="en-US">Union, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BrandonMs1Member" xlink:label="adc_BrandonMs1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BrandonMs1Member" xlink:to="adc_BrandonMs1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BrandonMs1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BrandonMs1Member_lbl" xml:lang="en-US">Brandon, MS1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FlowoodMs1Member" xlink:label="adc_FlowoodMs1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FlowoodMs1Member" xlink:to="adc_FlowoodMs1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FlowoodMs1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FlowoodMs1Member_lbl" xml:lang="en-US">Flowood, MS1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FlowoodMs2Member" xlink:label="adc_FlowoodMs2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FlowoodMs2Member" xlink:to="adc_FlowoodMs2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FlowoodMs2Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FlowoodMs2Member_lbl" xml:lang="en-US">Flowood, MS2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GoreSpringsMsMember" xlink:label="adc_GoreSpringsMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GoreSpringsMsMember" xlink:to="adc_GoreSpringsMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GoreSpringsMsMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GoreSpringsMsMember_lbl" xml:lang="en-US">Gore Springs, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GreenwoodMsMember" xlink:label="adc_GreenwoodMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GreenwoodMsMember" xlink:to="adc_GreenwoodMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GreenwoodMsMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GreenwoodMsMember_lbl" xml:lang="en-US">Greenwood, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GreenwoodMs1Member" xlink:label="adc_GreenwoodMs1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GreenwoodMs1Member" xlink:to="adc_GreenwoodMs1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GreenwoodMs1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GreenwoodMs1Member_lbl" xml:lang="en-US">Greenwood, MS1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GrenadaMsMember" xlink:label="adc_GrenadaMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GrenadaMsMember" xlink:to="adc_GrenadaMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GrenadaMsMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GrenadaMsMember_lbl" xml:lang="en-US">Grenada, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GulfportMs1Member" xlink:label="adc_GulfportMs1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GulfportMs1Member" xlink:to="adc_GulfportMs1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GulfportMs1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GulfportMs1Member_lbl" xml:lang="en-US">Gulfport, MS1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MadisonMsMember" xlink:label="adc_MadisonMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MadisonMsMember" xlink:to="adc_MadisonMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MadisonMsMember_lbl" xml:lang="en-US">n\a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MadisonMsMember_lbl" xml:lang="en-US">Madison, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OxfordMsMember" xlink:label="adc_OxfordMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OxfordMsMember" xlink:to="adc_OxfordMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OxfordMsMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OxfordMsMember_lbl" xml:lang="en-US">Oxford, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SouthavenMs1Member" xlink:label="adc_SouthavenMs1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SouthavenMs1Member" xlink:to="adc_SouthavenMs1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SouthavenMs1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SouthavenMs1Member_lbl" xml:lang="en-US">Southaven, MS1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WigginsMsMember" xlink:label="adc_WigginsMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WigginsMsMember" xlink:to="adc_WigginsMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WigginsMsMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WigginsMsMember_lbl" xml:lang="en-US">Wiggins, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AshevilleNcMember" xlink:label="adc_AshevilleNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AshevilleNcMember" xlink:to="adc_AshevilleNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AshevilleNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AshevilleNcMember_lbl" xml:lang="en-US">Asheville, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AtlanticBeachNcMember" xlink:label="adc_AtlanticBeachNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AtlanticBeachNcMember" xlink:to="adc_AtlanticBeachNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AtlanticBeachNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AtlanticBeachNcMember_lbl" xml:lang="en-US">Atlantic Beach, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BeaufortNcMember" xlink:label="adc_BeaufortNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BeaufortNcMember" xlink:to="adc_BeaufortNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BeaufortNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BeaufortNcMember_lbl" xml:lang="en-US">Beaufort, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BooneNcMember" xlink:label="adc_BooneNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BooneNcMember" xlink:to="adc_BooneNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BooneNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BooneNcMember_lbl" xml:lang="en-US">Boone, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BuxtonNcMember" xlink:label="adc_BuxtonNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BuxtonNcMember" xlink:to="adc_BuxtonNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BuxtonNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BuxtonNcMember_lbl" xml:lang="en-US">Buxton, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CaryNcMember" xlink:label="adc_CaryNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CaryNcMember" xlink:to="adc_CaryNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CaryNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CaryNcMember_lbl" xml:lang="en-US">Cary, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChapelHillNcMember" xlink:label="adc_ChapelHillNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChapelHillNcMember" xlink:to="adc_ChapelHillNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ChapelHillNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChapelHillNcMember_lbl" xml:lang="en-US">Chapel Hill, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CharlotteNc2Member" xlink:label="adc_CharlotteNc2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CharlotteNc2Member" xlink:to="adc_CharlotteNc2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CharlotteNc2Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CharlotteNc2Member_lbl" xml:lang="en-US">Charlotte, NC2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ConcordNc2Member" xlink:label="adc_ConcordNc2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ConcordNc2Member" xlink:to="adc_ConcordNc2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ConcordNc2Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ConcordNc2Member_lbl" xml:lang="en-US">Concord, NC2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DallasNcMember" xlink:label="adc_DallasNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DallasNcMember" xlink:to="adc_DallasNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DallasNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DallasNcMember_lbl" xml:lang="en-US">Dallas, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DurhamNc1Member" xlink:label="adc_DurhamNc1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DurhamNc1Member" xlink:to="adc_DurhamNc1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DurhamNc1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DurhamNc1Member_lbl" xml:lang="en-US">Durham, NC1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ElkinNcMember" xlink:label="adc_ElkinNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ElkinNcMember" xlink:to="adc_ElkinNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ElkinNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ElkinNcMember_lbl" xml:lang="en-US">Elkin, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ElmCityNcMember" xlink:label="adc_ElmCityNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ElmCityNcMember" xlink:to="adc_ElmCityNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ElmCityNcMember_lbl" xml:lang="en-US">n/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ElmCityNcMember_lbl" xml:lang="en-US">Elm City, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EmeraldIsleNcMember" xlink:label="adc_EmeraldIsleNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EmeraldIsleNcMember" xlink:to="adc_EmeraldIsleNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_EmeraldIsleNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EmeraldIsleNcMember_lbl" xml:lang="en-US">Emerald Isle, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FuquayVarinaNcMember" xlink:label="adc_FuquayVarinaNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FuquayVarinaNcMember" xlink:to="adc_FuquayVarinaNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FuquayVarinaNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FuquayVarinaNcMember_lbl" xml:lang="en-US">Fuquay-Varina, NC 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GarnerNcMember" xlink:label="adc_GarnerNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GarnerNcMember" xlink:to="adc_GarnerNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GarnerNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GarnerNcMember_lbl" xml:lang="en-US">Garner, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GoldsboroNcMember" xlink:label="adc_GoldsboroNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GoldsboroNcMember" xlink:to="adc_GoldsboroNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GoldsboroNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GoldsboroNcMember_lbl" xml:lang="en-US">Goldsboro, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GoldsboroNc1Member" xlink:label="adc_GoldsboroNc1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GoldsboroNc1Member" xlink:to="adc_GoldsboroNc1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GoldsboroNc1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GoldsboroNc1Member_lbl" xml:lang="en-US">Goldsboro, NC1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GreensboroNc1Member" xlink:label="adc_GreensboroNc1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GreensboroNc1Member" xlink:to="adc_GreensboroNc1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GreensboroNc1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GreensboroNc1Member_lbl" xml:lang="en-US">Greensboro, NC1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GreenvilleNc1Member" xlink:label="adc_GreenvilleNc1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GreenvilleNc1Member" xlink:to="adc_GreenvilleNc1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GreenvilleNc1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GreenvilleNc1Member_lbl" xml:lang="en-US">Greenville, NC1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HarkersIslandNcMember" xlink:label="adc_HarkersIslandNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HarkersIslandNcMember" xlink:to="adc_HarkersIslandNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HarkersIslandNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HarkersIslandNcMember_lbl" xml:lang="en-US">Harkers Island, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JacksonvilleNc2Member" xlink:label="adc_JacksonvilleNc2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JacksonvilleNc2Member" xlink:to="adc_JacksonvilleNc2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_JacksonvilleNc2Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JacksonvilleNc2Member_lbl" xml:lang="en-US">Jacksonville, NC2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JacksonvilleNc3Member" xlink:label="adc_JacksonvilleNc3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JacksonvilleNc3Member" xlink:to="adc_JacksonvilleNc3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_JacksonvilleNc3Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JacksonvilleNc3Member_lbl" xml:lang="en-US">Jacksonville, NC3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JacksonvilleNc4Member" xlink:label="adc_JacksonvilleNc4Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JacksonvilleNc4Member" xlink:to="adc_JacksonvilleNc4Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_JacksonvilleNc4Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JacksonvilleNc4Member_lbl" xml:lang="en-US">Jacksonville, NC4 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_KinstonNcMember" xlink:label="adc_KinstonNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_KinstonNcMember" xlink:to="adc_KinstonNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_KinstonNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_KinstonNcMember_lbl" xml:lang="en-US">Kinston, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_KnottsIslandNcMember" xlink:label="adc_KnottsIslandNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_KnottsIslandNcMember" xlink:to="adc_KnottsIslandNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_KnottsIslandNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_KnottsIslandNcMember_lbl" xml:lang="en-US">Knotts Island, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MoreheadCityNcMember" xlink:label="adc_MoreheadCityNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MoreheadCityNcMember" xlink:to="adc_MoreheadCityNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MoreheadCityNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MoreheadCityNcMember_lbl" xml:lang="en-US">Morehead City, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RandlemanNcMember" xlink:label="adc_RandlemanNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RandlemanNcMember" xlink:to="adc_RandlemanNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RandlemanNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RandlemanNcMember_lbl" xml:lang="en-US">Randleman, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RandlemanNc1Member" xlink:label="adc_RandlemanNc1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RandlemanNc1Member" xlink:to="adc_RandlemanNc1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RandlemanNc1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RandlemanNc1Member_lbl" xml:lang="en-US">Randleman, NC1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RockyMountNcMember" xlink:label="adc_RockyMountNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RockyMountNcMember" xlink:to="adc_RockyMountNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RockyMountNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RockyMountNcMember_lbl" xml:lang="en-US">Rocky Mount, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RockyMountNc1Member" xlink:label="adc_RockyMountNc1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RockyMountNc1Member" xlink:to="adc_RockyMountNc1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RockyMountNc1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RockyMountNc1Member_lbl" xml:lang="en-US">Rocky Mount, NC1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SalisburyNc1Member" xlink:label="adc_SalisburyNc1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SalisburyNc1Member" xlink:to="adc_SalisburyNc1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SalisburyNc1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SalisburyNc1Member_lbl" xml:lang="en-US">Salisbury, NC1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SalterPathNcMember" xlink:label="adc_SalterPathNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SalterPathNcMember" xlink:to="adc_SalterPathNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SalterPathNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SalterPathNcMember_lbl" xml:lang="en-US">Salter Path, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SmithfieldNcMember" xlink:label="adc_SmithfieldNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SmithfieldNcMember" xlink:to="adc_SmithfieldNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SmithfieldNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SmithfieldNcMember_lbl" xml:lang="en-US">Smithfield, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SylvaNc1Member" xlink:label="adc_SylvaNc1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SylvaNc1Member" xlink:to="adc_SylvaNc1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SylvaNc1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SylvaNc1Member_lbl" xml:lang="en-US">Sylva, NC1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WavesNcMember" xlink:label="adc_WavesNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WavesNcMember" xlink:to="adc_WavesNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WavesNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WavesNcMember_lbl" xml:lang="en-US">Waves, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WaxhawNcMember" xlink:label="adc_WaxhawNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WaxhawNcMember" xlink:to="adc_WaxhawNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WaxhawNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WaxhawNcMember_lbl" xml:lang="en-US">Waxhaw, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WinstonSalemNcMember" xlink:label="adc_WinstonSalemNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WinstonSalemNcMember" xlink:to="adc_WinstonSalemNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WinstonSalemNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WinstonSalemNcMember_lbl" xml:lang="en-US">Winston Salem, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WinstonSalemNc1Member" xlink:label="adc_WinstonSalemNc1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WinstonSalemNc1Member" xlink:to="adc_WinstonSalemNc1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WinstonSalemNc1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WinstonSalemNc1Member_lbl" xml:lang="en-US">Winston Salem, NC1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WintervilleNcMember" xlink:label="adc_WintervilleNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WintervilleNcMember" xlink:to="adc_WintervilleNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WintervilleNcMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WintervilleNcMember_lbl" xml:lang="en-US">Winterville, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_StanleyNdMember" xlink:label="adc_StanleyNdMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_StanleyNdMember" xlink:to="adc_StanleyNdMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_StanleyNdMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_StanleyNdMember_lbl" xml:lang="en-US">Stanley, ND [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LebanonNhMember" xlink:label="adc_LebanonNhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LebanonNhMember" xlink:to="adc_LebanonNhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LebanonNhMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LebanonNhMember_lbl" xml:lang="en-US">Lebanon, NH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BuddLakeNjMember" xlink:label="adc_BuddLakeNjMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BuddLakeNjMember" xlink:to="adc_BuddLakeNjMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BuddLakeNjMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BuddLakeNjMember_lbl" xml:lang="en-US">Budd Lake, NJ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FairfieldNjMember" xlink:label="adc_FairfieldNjMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FairfieldNjMember" xlink:to="adc_FairfieldNjMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FairfieldNjMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FairfieldNjMember_lbl" xml:lang="en-US">Fairfield, NJ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PatersonNjMember" xlink:label="adc_PatersonNjMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PatersonNjMember" xlink:to="adc_PatersonNjMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PatersonNjMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PatersonNjMember_lbl" xml:lang="en-US">Paterson, NJ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ClovisNmMember" xlink:label="adc_ClovisNmMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ClovisNmMember" xlink:to="adc_ClovisNmMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ClovisNmMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ClovisNmMember_lbl" xml:lang="en-US">Clovis, NM [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AlbanyNyMember" xlink:label="adc_AlbanyNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AlbanyNyMember" xlink:to="adc_AlbanyNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AlbanyNyMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AlbanyNyMember_lbl" xml:lang="en-US">Albany, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BemusPointNyMember" xlink:label="adc_BemusPointNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BemusPointNyMember" xlink:to="adc_BemusPointNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BemusPointNyMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BemusPointNyMember_lbl" xml:lang="en-US">Bemus Point, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CandorNyMember" xlink:label="adc_CandorNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CandorNyMember" xlink:to="adc_CandorNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CandorNyMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CandorNyMember_lbl" xml:lang="en-US">Candor, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ConklinNyMember" xlink:label="adc_ConklinNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ConklinNyMember" xlink:to="adc_ConklinNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ConklinNyMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ConklinNyMember_lbl" xml:lang="en-US">Conklin, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GreeneNyMember" xlink:label="adc_GreeneNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GreeneNyMember" xlink:to="adc_GreeneNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GreeneNyMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GreeneNyMember_lbl" xml:lang="en-US">Greene, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HamburgNy1Member" xlink:label="adc_HamburgNy1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HamburgNy1Member" xlink:to="adc_HamburgNy1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HamburgNy1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HamburgNy1Member_lbl" xml:lang="en-US">Hamburg, NY1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MasonvilleNyMember" xlink:label="adc_MasonvilleNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MasonvilleNyMember" xlink:to="adc_MasonvilleNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MasonvilleNyMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MasonvilleNyMember_lbl" xml:lang="en-US">Masonville, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MedfordNyMember" xlink:label="adc_MedfordNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MedfordNyMember" xlink:to="adc_MedfordNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MedfordNyMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MedfordNyMember_lbl" xml:lang="en-US">Medford, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MountUptonNyMember" xlink:label="adc_MountUptonNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MountUptonNyMember" xlink:to="adc_MountUptonNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MountUptonNyMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MountUptonNyMember_lbl" xml:lang="en-US">Mount Upton, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OleanNyMember" xlink:label="adc_OleanNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OleanNyMember" xlink:to="adc_OleanNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OleanNyMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OleanNyMember_lbl" xml:lang="en-US">Olean, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PompeyNyMember" xlink:label="adc_PompeyNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PompeyNyMember" xlink:to="adc_PompeyNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PompeyNyMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PompeyNyMember_lbl" xml:lang="en-US">Pompey, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RipleyNyMember" xlink:label="adc_RipleyNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RipleyNyMember" xlink:to="adc_RipleyNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RipleyNyMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RipleyNyMember_lbl" xml:lang="en-US">Ripley, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RochesterNy4Member" xlink:label="adc_RochesterNy4Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RochesterNy4Member" xlink:to="adc_RochesterNy4Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RochesterNy4Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RochesterNy4Member_lbl" xml:lang="en-US">Rochester, NY4 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SyracuseNy2Member" xlink:label="adc_SyracuseNy2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SyracuseNy2Member" xlink:to="adc_SyracuseNy2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SyracuseNy2Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SyracuseNy2Member_lbl" xml:lang="en-US">Syracuse, NY2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WainscottNyMember" xlink:label="adc_WainscottNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WainscottNyMember" xlink:to="adc_WainscottNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WainscottNyMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WainscottNyMember_lbl" xml:lang="en-US">Wainscott, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WatertownNyMember" xlink:label="adc_WatertownNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WatertownNyMember" xlink:to="adc_WatertownNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WatertownNyMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WatertownNyMember_lbl" xml:lang="en-US">Watertown, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BoardmanOhMember" xlink:label="adc_BoardmanOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BoardmanOhMember" xlink:to="adc_BoardmanOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BoardmanOhMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BoardmanOhMember_lbl" xml:lang="en-US">Boardman, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CarrolltonOhMember" xlink:label="adc_CarrolltonOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CarrolltonOhMember" xlink:to="adc_CarrolltonOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CarrolltonOhMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CarrolltonOhMember_lbl" xml:lang="en-US">Carrollton, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChillicotheOhMember" xlink:label="adc_ChillicotheOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChillicotheOhMember" xlink:to="adc_ChillicotheOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ChillicotheOhMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChillicotheOhMember_lbl" xml:lang="en-US">Chillicothe, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CincinnatiOhMember" xlink:label="adc_CincinnatiOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CincinnatiOhMember" xlink:to="adc_CincinnatiOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CincinnatiOhMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CincinnatiOhMember_lbl" xml:lang="en-US">Cincinnati, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ColumbusOh4Member" xlink:label="adc_ColumbusOh4Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ColumbusOh4Member" xlink:to="adc_ColumbusOh4Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ColumbusOh4Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ColumbusOh4Member_lbl" xml:lang="en-US">Columbus, OH5 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DefianceOhMember" xlink:label="adc_DefianceOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DefianceOhMember" xlink:to="adc_DefianceOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DefianceOhMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DefianceOhMember_lbl" xml:lang="en-US">Defiance, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DunkirkOhMember" xlink:label="adc_DunkirkOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DunkirkOhMember" xlink:to="adc_DunkirkOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DunkirkOhMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DunkirkOhMember_lbl" xml:lang="en-US">Dunkirk, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HudsonOhMember" xlink:label="adc_HudsonOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HudsonOhMember" xlink:to="adc_HudsonOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HudsonOhMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HudsonOhMember_lbl" xml:lang="en-US">Hudson, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MasonOhMember" xlink:label="adc_MasonOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MasonOhMember" xlink:to="adc_MasonOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MasonOhMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MasonOhMember_lbl" xml:lang="en-US">Mason, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MassillonOhMember" xlink:label="adc_MassillonOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MassillonOhMember" xlink:to="adc_MassillonOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MassillonOhMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MassillonOhMember_lbl" xml:lang="en-US">Massillon, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MayfieldHeightsOhMember" xlink:label="adc_MayfieldHeightsOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MayfieldHeightsOhMember" xlink:to="adc_MayfieldHeightsOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MayfieldHeightsOhMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MayfieldHeightsOhMember_lbl" xml:lang="en-US">Mayfield Heights, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OregonOhMember" xlink:label="adc_OregonOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OregonOhMember" xlink:to="adc_OregonOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OregonOhMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OregonOhMember_lbl" xml:lang="en-US">Oregon, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ParmaOhMember" xlink:label="adc_ParmaOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ParmaOhMember" xlink:to="adc_ParmaOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ParmaOhMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ParmaOhMember_lbl" xml:lang="en-US">Parma, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ToledoOh1Member" xlink:label="adc_ToledoOh1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ToledoOh1Member" xlink:to="adc_ToledoOh1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ToledoOh1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ToledoOh1Member_lbl" xml:lang="en-US">Toledo, OH1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ToledoOh5Member" xlink:label="adc_ToledoOh5Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ToledoOh5Member" xlink:to="adc_ToledoOh5Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ToledoOh5Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ToledoOh5Member_lbl" xml:lang="en-US">Toledo, OH5 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WestervilleOhMember" xlink:label="adc_WestervilleOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WestervilleOhMember" xlink:to="adc_WestervilleOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WestervilleOhMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WestervilleOhMember_lbl" xml:lang="en-US">Westerville, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WestervilleOh1Member" xlink:label="adc_WestervilleOh1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WestervilleOh1Member" xlink:to="adc_WestervilleOh1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WestervilleOh1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WestervilleOh1Member_lbl" xml:lang="en-US">Westerville, OH1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChecotahOkMember" xlink:label="adc_ChecotahOkMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChecotahOkMember" xlink:to="adc_ChecotahOkMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ChecotahOkMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChecotahOkMember_lbl" xml:lang="en-US">Checotah, OK [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ElkCityOk1Member" xlink:label="adc_ElkCityOk1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ElkCityOk1Member" xlink:to="adc_ElkCityOk1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ElkCityOk1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ElkCityOk1Member_lbl" xml:lang="en-US">Elk City, OK1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MooreOkMember" xlink:label="adc_MooreOkMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MooreOkMember" xlink:to="adc_MooreOkMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MooreOkMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MooreOkMember_lbl" xml:lang="en-US">Moore, OK [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OklahomaCityOk2Member" xlink:label="adc_OklahomaCityOk2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OklahomaCityOk2Member" xlink:to="adc_OklahomaCityOk2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OklahomaCityOk2Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OklahomaCityOk2Member_lbl" xml:lang="en-US">Oklahoma City, OK2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EugeneOrMember" xlink:label="adc_EugeneOrMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EugeneOrMember" xlink:to="adc_EugeneOrMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_EugeneOrMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EugeneOrMember_lbl" xml:lang="en-US">Eugene, OR [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SeasideOrMember" xlink:label="adc_SeasideOrMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SeasideOrMember" xlink:to="adc_SeasideOrMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SeasideOrMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SeasideOrMember_lbl" xml:lang="en-US">Seaside, OR [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BristolPaMember" xlink:label="adc_BristolPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BristolPaMember" xlink:to="adc_BristolPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BristolPaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BristolPaMember_lbl" xml:lang="en-US">Bristol, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LawrenceTownshipPaMember" xlink:label="adc_LawrenceTownshipPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LawrenceTownshipPaMember" xlink:to="adc_LawrenceTownshipPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LawrenceTownshipPaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LawrenceTownshipPaMember_lbl" xml:lang="en-US">Lawrence Township, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NescopeckPaMember" xlink:label="adc_NescopeckPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NescopeckPaMember" xlink:to="adc_NescopeckPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NescopeckPaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NescopeckPaMember_lbl" xml:lang="en-US">Nescopeck, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NewMilfordPaMember" xlink:label="adc_NewMilfordPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NewMilfordPaMember" xlink:to="adc_NewMilfordPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NewMilfordPaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NewMilfordPaMember_lbl" xml:lang="en-US">New Milford, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OrangevillePaMember" xlink:label="adc_OrangevillePaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OrangevillePaMember" xlink:to="adc_OrangevillePaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OrangevillePaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OrangevillePaMember_lbl" xml:lang="en-US">Orangeville, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PortTrevortonPaMember" xlink:label="adc_PortTrevortonPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PortTrevortonPaMember" xlink:to="adc_PortTrevortonPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PortTrevortonPaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PortTrevortonPaMember_lbl" xml:lang="en-US">Port Trevorton, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TobyhannaPaMember" xlink:label="adc_TobyhannaPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TobyhannaPaMember" xlink:to="adc_TobyhannaPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TobyhannaPaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TobyhannaPaMember_lbl" xml:lang="en-US">Tobyhanna, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WellsboroPaMember" xlink:label="adc_WellsboroPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WellsboroPaMember" xlink:to="adc_WellsboroPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WellsboroPaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WellsboroPaMember_lbl" xml:lang="en-US">Wellsboro, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WhitehallPaMember" xlink:label="adc_WhitehallPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WhitehallPaMember" xlink:to="adc_WhitehallPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WhitehallPaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WhitehallPaMember_lbl" xml:lang="en-US">Whitehall, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChapinScMember" xlink:label="adc_ChapinScMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChapinScMember" xlink:to="adc_ChapinScMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ChapinScMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChapinScMember_lbl" xml:lang="en-US">Chapin, SC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ClemsonScMember" xlink:label="adc_ClemsonScMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ClemsonScMember" xlink:to="adc_ClemsonScMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ClemsonScMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ClemsonScMember_lbl" xml:lang="en-US">Clemson, SC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ColumbiaSc3Member" xlink:label="adc_ColumbiaSc3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ColumbiaSc3Member" xlink:to="adc_ColumbiaSc3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ColumbiaSc3Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ColumbiaSc3Member_lbl" xml:lang="en-US">Columbia, SC3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ColumbiaSc4Member" xlink:label="adc_ColumbiaSc4Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ColumbiaSc4Member" xlink:to="adc_ColumbiaSc4Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ColumbiaSc4Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ColumbiaSc4Member_lbl" xml:lang="en-US">Columbia, SC4 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GreerScMember" xlink:label="adc_GreerScMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GreerScMember" xlink:to="adc_GreerScMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GreerScMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GreerScMember_lbl" xml:lang="en-US">Greer, SC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_IrmoScMember" xlink:label="adc_IrmoScMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_IrmoScMember" xlink:to="adc_IrmoScMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_IrmoScMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_IrmoScMember_lbl" xml:lang="en-US">Irmo, SC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MyrtleBeachSc2Member" xlink:label="adc_MyrtleBeachSc2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MyrtleBeachSc2Member" xlink:to="adc_MyrtleBeachSc2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MyrtleBeachSc2Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MyrtleBeachSc2Member_lbl" xml:lang="en-US">Myrtle Beach, SC2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MyrtleBeachSc3Member" xlink:label="adc_MyrtleBeachSc3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MyrtleBeachSc3Member" xlink:to="adc_MyrtleBeachSc3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MyrtleBeachSc3Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MyrtleBeachSc3Member_lbl" xml:lang="en-US">Myrtle Beach, SC3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PagelandScMember" xlink:label="adc_PagelandScMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PagelandScMember" xlink:to="adc_PagelandScMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PagelandScMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PagelandScMember_lbl" xml:lang="en-US">Pageland, SC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_VermillionSdMember" xlink:label="adc_VermillionSdMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_VermillionSdMember" xlink:to="adc_VermillionSdMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_VermillionSdMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_VermillionSdMember_lbl" xml:lang="en-US">Vermillion, SD [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_YanktonSdMember" xlink:label="adc_YanktonSdMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_YanktonSdMember" xlink:to="adc_YanktonSdMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_YanktonSdMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_YanktonSdMember_lbl" xml:lang="en-US">Yankton, SD [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ClevelandTnMember" xlink:label="adc_ClevelandTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ClevelandTnMember" xlink:to="adc_ClevelandTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ClevelandTnMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ClevelandTnMember_lbl" xml:lang="en-US">Cleveland, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HendersonTnMember" xlink:label="adc_HendersonTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HendersonTnMember" xlink:to="adc_HendersonTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HendersonTnMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HendersonTnMember_lbl" xml:lang="en-US">Henderson, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_KimballTnMember" xlink:label="adc_KimballTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_KimballTnMember" xlink:to="adc_KimballTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_KimballTnMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_KimballTnMember_lbl" xml:lang="en-US">Kimball, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_KnoxvilleTn1Member" xlink:label="adc_KnoxvilleTn1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_KnoxvilleTn1Member" xlink:to="adc_KnoxvilleTn1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_KnoxvilleTn1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_KnoxvilleTn1Member_lbl" xml:lang="en-US">Knoxville, TN1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_KnoxvilleTn3Member" xlink:label="adc_KnoxvilleTn3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_KnoxvilleTn3Member" xlink:to="adc_KnoxvilleTn3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_KnoxvilleTn3Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_KnoxvilleTn3Member_lbl" xml:lang="en-US">Knoxville, TN3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LakelandTnMember" xlink:label="adc_LakelandTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LakelandTnMember" xlink:to="adc_LakelandTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LakelandTnMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LakelandTnMember_lbl" xml:lang="en-US">Lakeland, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NashvilleTnMember" xlink:label="adc_NashvilleTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NashvilleTnMember" xlink:to="adc_NashvilleTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NashvilleTnMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NashvilleTnMember_lbl" xml:lang="en-US">Nashville, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NashvilleTn1Member" xlink:label="adc_NashvilleTn1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NashvilleTn1Member" xlink:to="adc_NashvilleTn1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NashvilleTn1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NashvilleTn1Member_lbl" xml:lang="en-US">Nashville, TN1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SeymourTnMember" xlink:label="adc_SeymourTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SeymourTnMember" xlink:to="adc_SeymourTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SeymourTnMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SeymourTnMember_lbl" xml:lang="en-US">Seymour, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TullahomaTnMember" xlink:label="adc_TullahomaTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TullahomaTnMember" xlink:to="adc_TullahomaTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TullahomaTnMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TullahomaTnMember_lbl" xml:lang="en-US">Tullahoma, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BeltonTxMember" xlink:label="adc_BeltonTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BeltonTxMember" xlink:to="adc_BeltonTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BeltonTxMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BeltonTxMember_lbl" xml:lang="en-US">Belton, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ComancheTxMember" xlink:label="adc_ComancheTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ComancheTxMember" xlink:to="adc_ComancheTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ComancheTxMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ComancheTxMember_lbl" xml:lang="en-US">Comanche, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ConroeTxMember" xlink:label="adc_ConroeTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ConroeTxMember" xlink:to="adc_ConroeTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ConroeTxMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ConroeTxMember_lbl" xml:lang="en-US">Conroe, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ConverseTxMember" xlink:label="adc_ConverseTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ConverseTxMember" xlink:to="adc_ConverseTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ConverseTxMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ConverseTxMember_lbl" xml:lang="en-US">Converse, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ConverseTx1Member" xlink:label="adc_ConverseTx1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ConverseTx1Member" xlink:to="adc_ConverseTx1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ConverseTx1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ConverseTx1Member_lbl" xml:lang="en-US">Converse, TX 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CueroTxMember" xlink:label="adc_CueroTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CueroTxMember" xlink:to="adc_CueroTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CueroTxMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CueroTxMember_lbl" xml:lang="en-US">Cuero, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DaytonTxMember" xlink:label="adc_DaytonTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DaytonTxMember" xlink:to="adc_DaytonTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DaytonTxMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DaytonTxMember_lbl" xml:lang="en-US">Dayton, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DevineTxMember" xlink:label="adc_DevineTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DevineTxMember" xlink:to="adc_DevineTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DevineTxMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DevineTxMember_lbl" xml:lang="en-US">Devine, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ElPasoTxMember" xlink:label="adc_ElPasoTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ElPasoTxMember" xlink:to="adc_ElPasoTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ElPasoTxMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ElPasoTxMember_lbl" xml:lang="en-US">El Paso, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EulessTxMember" xlink:label="adc_EulessTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EulessTxMember" xlink:to="adc_EulessTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_EulessTxMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EulessTxMember_lbl" xml:lang="en-US">Euless, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GonzalesTxMember" xlink:label="adc_GonzalesTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GonzalesTxMember" xlink:to="adc_GonzalesTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GonzalesTxMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GonzalesTxMember_lbl" xml:lang="en-US">Gonzales, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HarkerHeightsTxMember" xlink:label="adc_HarkerHeightsTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HarkerHeightsTxMember" xlink:to="adc_HarkerHeightsTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HarkerHeightsTxMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HarkerHeightsTxMember_lbl" xml:lang="en-US">Harker Heights, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HarkerHeightsTx1Member" xlink:label="adc_HarkerHeightsTx1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HarkerHeightsTx1Member" xlink:to="adc_HarkerHeightsTx1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HarkerHeightsTx1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HarkerHeightsTx1Member_lbl" xml:lang="en-US">Harker Heights, TX 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HarlingenTx2Member" xlink:label="adc_HarlingenTx2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HarlingenTx2Member" xlink:to="adc_HarlingenTx2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HarlingenTx2Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HarlingenTx2Member_lbl" xml:lang="en-US">Harlingen, TX 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HoustonTxMember" xlink:label="adc_HoustonTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HoustonTxMember" xlink:to="adc_HoustonTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HoustonTxMember_lbl" xml:lang="en-US">n/</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HoustonTxMember_lbl" xml:lang="en-US">Houston, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HoustonTx1Member" xlink:label="adc_HoustonTx1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HoustonTx1Member" xlink:to="adc_HoustonTx1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HoustonTx1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HoustonTx1Member_lbl" xml:lang="en-US">Houston, TX 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HoustonTx2Member" xlink:label="adc_HoustonTx2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HoustonTx2Member" xlink:to="adc_HoustonTx2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HoustonTx2Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HoustonTx2Member_lbl" xml:lang="en-US">Houston, TX 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HumbleTx1Member" xlink:label="adc_HumbleTx1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HumbleTx1Member" xlink:to="adc_HumbleTx1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HumbleTx1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HumbleTx1Member_lbl" xml:lang="en-US">Humble, TX 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LaFeriaTxMember" xlink:label="adc_LaFeriaTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LaFeriaTxMember" xlink:to="adc_LaFeriaTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LaFeriaTxMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LaFeriaTxMember_lbl" xml:lang="en-US">La Feria, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LakeJacksonTxMember" xlink:label="adc_LakeJacksonTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LakeJacksonTxMember" xlink:to="adc_LakeJacksonTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LakeJacksonTxMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LakeJacksonTxMember_lbl" xml:lang="en-US">Lake Jackson, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LewisvilleTx1Member" xlink:label="adc_LewisvilleTx1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LewisvilleTx1Member" xlink:to="adc_LewisvilleTx1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LewisvilleTx1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LewisvilleTx1Member_lbl" xml:lang="en-US">Lewisville, TX 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LubbockTx2Member" xlink:label="adc_LubbockTx2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LubbockTx2Member" xlink:to="adc_LubbockTx2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LubbockTx2Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LubbockTx2Member_lbl" xml:lang="en-US">Lubbock, TX 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LubbockTx3Member" xlink:label="adc_LubbockTx3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LubbockTx3Member" xlink:to="adc_LubbockTx3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LubbockTx3Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LubbockTx3Member_lbl" xml:lang="en-US">Lubbock, TX 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MansfieldTxMember" xlink:label="adc_MansfieldTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MansfieldTxMember" xlink:to="adc_MansfieldTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MansfieldTxMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MansfieldTxMember_lbl" xml:lang="en-US">Mansfield, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MckinneyTx1Member" xlink:label="adc_MckinneyTx1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MckinneyTx1Member" xlink:to="adc_MckinneyTx1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MckinneyTx1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MckinneyTx1Member_lbl" xml:lang="en-US">Mckinney, TX 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RhomeTxMember" xlink:label="adc_RhomeTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RhomeTxMember" xlink:to="adc_RhomeTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RhomeTxMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RhomeTxMember_lbl" xml:lang="en-US">Rhome, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SaginawTxMember" xlink:label="adc_SaginawTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SaginawTxMember" xlink:to="adc_SaginawTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SaginawTxMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SaginawTxMember_lbl" xml:lang="en-US">Saginaw, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SanAntonioTxMember" xlink:label="adc_SanAntonioTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SanAntonioTxMember" xlink:to="adc_SanAntonioTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SanAntonioTxMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SanAntonioTxMember_lbl" xml:lang="en-US">San Antonio, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TerrellTxMember" xlink:label="adc_TerrellTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TerrellTxMember" xlink:to="adc_TerrellTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TerrellTxMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TerrellTxMember_lbl" xml:lang="en-US">Terrell, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TomballTx1Member" xlink:label="adc_TomballTx1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TomballTx1Member" xlink:to="adc_TomballTx1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TomballTx1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TomballTx1Member_lbl" xml:lang="en-US">Tomball, TX 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WeslacoTxMember" xlink:label="adc_WeslacoTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WeslacoTxMember" xlink:to="adc_WeslacoTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WeslacoTxMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WeslacoTxMember_lbl" xml:lang="en-US">Weslaco, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WylieTx1Member" xlink:label="adc_WylieTx1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WylieTx1Member" xlink:to="adc_WylieTx1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WylieTx1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WylieTx1Member_lbl" xml:lang="en-US">Wylie, TX 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChesterVa1Member" xlink:label="adc_ChesterVa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChesterVa1Member" xlink:to="adc_ChesterVa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ChesterVa1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChesterVa1Member_lbl" xml:lang="en-US">Chester, VA 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GalaxVaMember" xlink:label="adc_GalaxVaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GalaxVaMember" xlink:to="adc_GalaxVaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GalaxVaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GalaxVaMember_lbl" xml:lang="en-US">Galax, VA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HenricoVaMember" xlink:label="adc_HenricoVaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HenricoVaMember" xlink:to="adc_HenricoVaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HenricoVaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HenricoVaMember_lbl" xml:lang="en-US">Henrico, VA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LynchburgVaMember" xlink:label="adc_LynchburgVaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LynchburgVaMember" xlink:to="adc_LynchburgVaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LynchburgVaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LynchburgVaMember_lbl" xml:lang="en-US">Lynchburg, VA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BurlingtonWiMember" xlink:label="adc_BurlingtonWiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BurlingtonWiMember" xlink:to="adc_BurlingtonWiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BurlingtonWiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BurlingtonWiMember_lbl" xml:lang="en-US">Burlington, WI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GermantownWiMember" xlink:label="adc_GermantownWiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GermantownWiMember" xlink:to="adc_GermantownWiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GermantownWiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GermantownWiMember_lbl" xml:lang="en-US">Germantown, WI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MinocquaWiMember" xlink:label="adc_MinocquaWiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MinocquaWiMember" xlink:to="adc_MinocquaWiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MinocquaWiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MinocquaWiMember_lbl" xml:lang="en-US">Minocqua, WI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_Mt.PleasantWi1Member" xlink:label="adc_Mt.PleasantWi1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_Mt.PleasantWi1Member" xlink:to="adc_Mt.PleasantWi1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_Mt.PleasantWi1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_Mt.PleasantWi1Member_lbl" xml:lang="en-US">Mt. Pleasant, WI 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PortageWiMember" xlink:label="adc_PortageWiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PortageWiMember" xlink:to="adc_PortageWiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PortageWiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PortageWiMember_lbl" xml:lang="en-US">Portage, WI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ViennaWvMember" xlink:label="adc_ViennaWvMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ViennaWvMember" xlink:to="adc_ViennaWvMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ViennaWvMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ViennaWvMember_lbl" xml:lang="en-US">Vienna, WV [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CheyenneWyMember" xlink:label="adc_CheyenneWyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CheyenneWyMember" xlink:to="adc_CheyenneWyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CheyenneWyMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CheyenneWyMember_lbl" xml:lang="en-US">Cheyenne, WY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GadsdenAlMember" xlink:label="adc_GadsdenAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GadsdenAlMember" xlink:to="adc_GadsdenAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GadsdenAlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GadsdenAlMember_lbl" xml:lang="en-US">Gadsden, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JasperAlMember" xlink:label="adc_JasperAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JasperAlMember" xlink:to="adc_JasperAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_JasperAlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JasperAlMember_lbl" xml:lang="en-US">Jasper, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PelhamAlMember" xlink:label="adc_PelhamAlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PelhamAlMember" xlink:to="adc_PelhamAlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PelhamAlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PelhamAlMember_lbl" xml:lang="en-US">Pelham, AL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SpringdaleArMember" xlink:label="adc_SpringdaleArMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SpringdaleArMember" xlink:to="adc_SpringdaleArMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SpringdaleArMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SpringdaleArMember_lbl" xml:lang="en-US">Springdale, AR [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AvondaleAzMember" xlink:label="adc_AvondaleAzMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AvondaleAzMember" xlink:to="adc_AvondaleAzMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AvondaleAzMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AvondaleAzMember_lbl" xml:lang="en-US">Avondale, AZ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WinslowAzMember" xlink:label="adc_WinslowAzMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WinslowAzMember" xlink:to="adc_WinslowAzMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WinslowAzMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WinslowAzMember_lbl" xml:lang="en-US">Winslow, AZ[Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ColtonCaMember" xlink:label="adc_ColtonCaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ColtonCaMember" xlink:to="adc_ColtonCaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ColtonCaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ColtonCaMember_lbl" xml:lang="en-US">Colton, CA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ColtonCaIiMember" xlink:label="adc_ColtonCaIiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ColtonCaIiMember" xlink:to="adc_ColtonCaIiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ColtonCaIiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ColtonCaIiMember_lbl" xml:lang="en-US">Colton, CA II [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ElkGroveCaMember" xlink:label="adc_ElkGroveCaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ElkGroveCaMember" xlink:to="adc_ElkGroveCaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ElkGroveCaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ElkGroveCaMember_lbl" xml:lang="en-US">Elk Grove, CA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PleasantHillCaMember" xlink:label="adc_PleasantHillCaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PleasantHillCaMember" xlink:to="adc_PleasantHillCaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PleasantHillCaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PleasantHillCaMember_lbl" xml:lang="en-US">Pleasant Hill, CA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SacramentoCaMember" xlink:label="adc_SacramentoCaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SacramentoCaMember" xlink:to="adc_SacramentoCaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SacramentoCaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SacramentoCaMember_lbl" xml:lang="en-US">Sacramento, CA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_VanNuysCaMember" xlink:label="adc_VanNuysCaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_VanNuysCaMember" xlink:to="adc_VanNuysCaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_VanNuysCaMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_VanNuysCaMember_lbl" xml:lang="en-US">Van Nuys, CA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SilverthorneCoMember" xlink:label="adc_SilverthorneCoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SilverthorneCoMember" xlink:to="adc_SilverthorneCoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SilverthorneCoMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SilverthorneCoMember_lbl" xml:lang="en-US">Silverthorne, CO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ColchesterCtMember" xlink:label="adc_ColchesterCtMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ColchesterCtMember" xlink:to="adc_ColchesterCtMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ColchesterCtMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ColchesterCtMember_lbl" xml:lang="en-US">Colchester, CT [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_StratfordCtMember" xlink:label="adc_StratfordCtMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_StratfordCtMember" xlink:to="adc_StratfordCtMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_StratfordCtMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_StratfordCtMember_lbl" xml:lang="en-US">Stratford, CT [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WallingfordCtMember" xlink:label="adc_WallingfordCtMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WallingfordCtMember" xlink:to="adc_WallingfordCtMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WallingfordCtMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WallingfordCtMember_lbl" xml:lang="en-US">Wallingford, CT [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WallingfordCtIiMember" xlink:label="adc_WallingfordCtIiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WallingfordCtIiMember" xlink:to="adc_WallingfordCtIiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WallingfordCtIiMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WallingfordCtIiMember_lbl" xml:lang="en-US">Wallingford, CT II [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BridgevilleDeMember" xlink:label="adc_BridgevilleDeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BridgevilleDeMember" xlink:to="adc_BridgevilleDeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BridgevilleDeMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BridgevilleDeMember_lbl" xml:lang="en-US">Bridgeville, DE [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DaytonaBeachFlMember" xlink:label="adc_DaytonaBeachFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DaytonaBeachFlMember" xlink:to="adc_DaytonaBeachFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DaytonaBeachFlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DaytonaBeachFlMember_lbl" xml:lang="en-US">Daytona Beach, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DaytonaBeachFlIMember" xlink:label="adc_DaytonaBeachFlIMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DaytonaBeachFlIMember" xlink:to="adc_DaytonaBeachFlIMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DaytonaBeachFlIMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DaytonaBeachFlIMember_lbl" xml:lang="en-US">Daytona Beach, FL I [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FortWaltonBeachFlIMember" xlink:label="adc_FortWaltonBeachFlIMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FortWaltonBeachFlIMember" xlink:to="adc_FortWaltonBeachFlIMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FortWaltonBeachFlIMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FortWaltonBeachFlIMember_lbl" xml:lang="en-US">Fort Walton Beach, FL I [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HialeahFlMember" xlink:label="adc_HialeahFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HialeahFlMember" xlink:to="adc_HialeahFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HialeahFlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HialeahFlMember_lbl" xml:lang="en-US">Hialeah, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HollywoodFlIMember" xlink:label="adc_HollywoodFlIMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HollywoodFlIMember" xlink:to="adc_HollywoodFlIMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HollywoodFlIMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HollywoodFlIMember_lbl" xml:lang="en-US">Hollywood, FL I [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HomesteadFlIMember" xlink:label="adc_HomesteadFlIMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HomesteadFlIMember" xlink:to="adc_HomesteadFlIMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HomesteadFlIMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HomesteadFlIMember_lbl" xml:lang="en-US">Homestead, FL I [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JacksonvilleFlIMember" xlink:label="adc_JacksonvilleFlIMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JacksonvilleFlIMember" xlink:to="adc_JacksonvilleFlIMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_JacksonvilleFlIMember_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JacksonvilleFlIMember_lbl" xml:lang="en-US">Jacksonville, FL I [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MerrittIslandFl2Member" xlink:label="adc_MerrittIslandFl2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MerrittIslandFl2Member" xlink:to="adc_MerrittIslandFl2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MerrittIslandFl2Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MerrittIslandFl2Member_lbl" xml:lang="en-US">Merritt Island, FL 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NaplesFlMember" xlink:label="adc_NaplesFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NaplesFlMember" xlink:to="adc_NaplesFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NaplesFlMember_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NaplesFlMember_lbl" xml:lang="en-US">Naples, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NaplesFl1Member" xlink:label="adc_NaplesFl1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NaplesFl1Member" xlink:to="adc_NaplesFl1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NaplesFl1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NaplesFl1Member_lbl" xml:lang="en-US">Naples, FL 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NaplesFl2Member" xlink:label="adc_NaplesFl2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NaplesFl2Member" xlink:to="adc_NaplesFl2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NaplesFl2Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NaplesFl2Member_lbl" xml:lang="en-US">Naples, FL 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OrlandoFl2Member" xlink:label="adc_OrlandoFl2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OrlandoFl2Member" xlink:to="adc_OrlandoFl2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OrlandoFl2Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OrlandoFl2Member_lbl" xml:lang="en-US">Orlando, FL 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PembrokePinesFlMember" xlink:label="adc_PembrokePinesFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PembrokePinesFlMember" xlink:to="adc_PembrokePinesFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PembrokePinesFlMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PembrokePinesFlMember_lbl" xml:lang="en-US">Pembroke Pines, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SarasotaFl2Member" xlink:label="adc_SarasotaFl2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SarasotaFl2Member" xlink:to="adc_SarasotaFl2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SarasotaFl2Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SarasotaFl2Member_lbl" xml:lang="en-US">Sarasota, FL 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TampaFl2Member" xlink:label="adc_TampaFl2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TampaFl2Member" xlink:to="adc_TampaFl2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TampaFl2Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TampaFl2Member_lbl" xml:lang="en-US">Tampa, FL 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_VeroBeachFl3Member" xlink:label="adc_VeroBeachFl3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_VeroBeachFl3Member" xlink:to="adc_VeroBeachFl3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_VeroBeachFl3Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_VeroBeachFl3Member_lbl" xml:lang="en-US">Vero Beach, FL 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_YuleeFlMember" xlink:label="adc_YuleeFlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_YuleeFlMember" xlink:to="adc_YuleeFlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_YuleeFlMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_YuleeFlMember_lbl" xml:lang="en-US">Yulee, FL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AthensGaMember" xlink:label="adc_AthensGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AthensGaMember" xlink:to="adc_AthensGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AthensGaMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AthensGaMember_lbl" xml:lang="en-US">Athens, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BufordGa2Member" xlink:label="adc_BufordGa2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BufordGa2Member" xlink:to="adc_BufordGa2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BufordGa2Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BufordGa2Member_lbl" xml:lang="en-US">Buford, GA 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ConyersGa2Member" xlink:label="adc_ConyersGa2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ConyersGa2Member" xlink:to="adc_ConyersGa2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ConyersGa2Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ConyersGa2Member_lbl" xml:lang="en-US">Conyers, GA 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DublinGaMember" xlink:label="adc_DublinGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DublinGaMember" xlink:to="adc_DublinGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DublinGaMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DublinGaMember_lbl" xml:lang="en-US">Dublin, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GrayGaMember" xlink:label="adc_GrayGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GrayGaMember" xlink:to="adc_GrayGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GrayGaMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GrayGaMember_lbl" xml:lang="en-US">Gray, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JeffersonGaMember" xlink:label="adc_JeffersonGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JeffersonGaMember" xlink:to="adc_JeffersonGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_JeffersonGaMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JeffersonGaMember_lbl" xml:lang="en-US">Jefferson, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JonesboroGaMember" xlink:label="adc_JonesboroGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JonesboroGaMember" xlink:to="adc_JonesboroGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_JonesboroGaMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JonesboroGaMember_lbl" xml:lang="en-US">Jonesboro, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_KingslandGaMember" xlink:label="adc_KingslandGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_KingslandGaMember" xlink:to="adc_KingslandGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_KingslandGaMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_KingslandGaMember_lbl" xml:lang="en-US">Kingsland, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MariettaGa4Member" xlink:label="adc_MariettaGa4Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MariettaGa4Member" xlink:to="adc_MariettaGa4Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MariettaGa4Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MariettaGa4Member_lbl" xml:lang="en-US">Marietta, GA 4 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RomeGaMember" xlink:label="adc_RomeGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RomeGaMember" xlink:to="adc_RomeGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RomeGaMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RomeGaMember_lbl" xml:lang="en-US">Rome, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_StockbridgeGaMember" xlink:label="adc_StockbridgeGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_StockbridgeGaMember" xlink:to="adc_StockbridgeGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_StockbridgeGaMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_StockbridgeGaMember_lbl" xml:lang="en-US">Stockbridge, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ThomsonGaMember" xlink:label="adc_ThomsonGaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ThomsonGaMember" xlink:to="adc_ThomsonGaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ThomsonGaMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ThomsonGaMember_lbl" xml:lang="en-US">Thomson, GA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CentervilleIaMember" xlink:label="adc_CentervilleIaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CentervilleIaMember" xlink:to="adc_CentervilleIaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CentervilleIaMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CentervilleIaMember_lbl" xml:lang="en-US">Centerville, IA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DesMoinesIa2Member" xlink:label="adc_DesMoinesIa2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DesMoinesIa2Member" xlink:to="adc_DesMoinesIa2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DesMoinesIa2Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DesMoinesIa2Member_lbl" xml:lang="en-US">Des Moines, IA 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MasonCityIaMember" xlink:label="adc_MasonCityIaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MasonCityIaMember" xlink:to="adc_MasonCityIaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MasonCityIaMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MasonCityIaMember_lbl" xml:lang="en-US">Mason City, IA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NampaId2Member" xlink:label="adc_NampaId2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NampaId2Member" xlink:to="adc_NampaId2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NampaId2Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NampaId2Member_lbl" xml:lang="en-US">Nampa, ID 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BloomingdaleIl1Member" xlink:label="adc_BloomingdaleIl1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BloomingdaleIl1Member" xlink:to="adc_BloomingdaleIl1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BloomingdaleIl1Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BloomingdaleIl1Member_lbl" xml:lang="en-US">Bloomingdale, IL 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BloomingtonIl2Member" xlink:label="adc_BloomingtonIl2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BloomingtonIl2Member" xlink:to="adc_BloomingtonIl2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BloomingtonIl2Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BloomingtonIl2Member_lbl" xml:lang="en-US">Bloomington, IL 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BourbonnaisIl3Member" xlink:label="adc_BourbonnaisIl3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BourbonnaisIl3Member" xlink:to="adc_BourbonnaisIl3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BourbonnaisIl3Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BourbonnaisIl3Member_lbl" xml:lang="en-US">Bourbonnais, IL 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CarbondaleIlMember" xlink:label="adc_CarbondaleIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CarbondaleIlMember" xlink:to="adc_CarbondaleIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CarbondaleIlMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CarbondaleIlMember_lbl" xml:lang="en-US">Carbondale, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChampaignIlMember" xlink:label="adc_ChampaignIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChampaignIlMember" xlink:to="adc_ChampaignIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ChampaignIlMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChampaignIlMember_lbl" xml:lang="en-US">Champaign, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CharlestonIlMember" xlink:label="adc_CharlestonIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CharlestonIlMember" xlink:to="adc_CharlestonIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CharlestonIlMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CharlestonIlMember_lbl" xml:lang="en-US">Charleston, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChicagoIl8Member" xlink:label="adc_ChicagoIl8Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChicagoIl8Member" xlink:to="adc_ChicagoIl8Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ChicagoIl8Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChicagoIl8Member_lbl" xml:lang="en-US">Chicago, IL 8 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CoalCityIlMember" xlink:label="adc_CoalCityIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CoalCityIlMember" xlink:to="adc_CoalCityIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CoalCityIlMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CoalCityIlMember_lbl" xml:lang="en-US">Coal City, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EastDundeeIlMember" xlink:label="adc_EastDundeeIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EastDundeeIlMember" xlink:to="adc_EastDundeeIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_EastDundeeIlMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EastDundeeIlMember_lbl" xml:lang="en-US">East Dundee, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EastPeoriaIlMember" xlink:label="adc_EastPeoriaIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EastPeoriaIlMember" xlink:to="adc_EastPeoriaIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_EastPeoriaIlMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EastPeoriaIlMember_lbl" xml:lang="en-US">East Peoria, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HampshireIlMember" xlink:label="adc_HampshireIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HampshireIlMember" xlink:to="adc_HampshireIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HampshireIlMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HampshireIlMember_lbl" xml:lang="en-US">Hampshire, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HuntleyIlMember" xlink:label="adc_HuntleyIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HuntleyIlMember" xlink:to="adc_HuntleyIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HuntleyIlMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HuntleyIlMember_lbl" xml:lang="en-US">Huntley, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JolietIlMember" xlink:label="adc_JolietIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JolietIlMember" xlink:to="adc_JolietIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_JolietIlMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JolietIlMember_lbl" xml:lang="en-US">Joliet, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LakemoorIlMember" xlink:label="adc_LakemoorIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LakemoorIlMember" xlink:to="adc_LakemoorIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LakemoorIlMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LakemoorIlMember_lbl" xml:lang="en-US">Lakemoor, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LombardIlMember" xlink:label="adc_LombardIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LombardIlMember" xlink:to="adc_LombardIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LombardIlMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LombardIlMember_lbl" xml:lang="en-US">Lombard, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MountProspectIlMember" xlink:label="adc_MountProspectIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MountProspectIlMember" xlink:to="adc_MountProspectIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MountProspectIlMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MountProspectIlMember_lbl" xml:lang="en-US">Mount Prospect, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NapervilleIlMember" xlink:label="adc_NapervilleIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NapervilleIlMember" xlink:to="adc_NapervilleIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NapervilleIlMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NapervilleIlMember_lbl" xml:lang="en-US">Naperville, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RockfordIl3Member" xlink:label="adc_RockfordIl3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RockfordIl3Member" xlink:to="adc_RockfordIl3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RockfordIl3Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RockfordIl3Member_lbl" xml:lang="en-US">Rockford, IL 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RomeovilleIlMember" xlink:label="adc_RomeovilleIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RomeovilleIlMember" xlink:to="adc_RomeovilleIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RomeovilleIlMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RomeovilleIlMember_lbl" xml:lang="en-US">Romeoville, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SchillerParkIlMember" xlink:label="adc_SchillerParkIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SchillerParkIlMember" xlink:to="adc_SchillerParkIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SchillerParkIlMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SchillerParkIlMember_lbl" xml:lang="en-US">Schiller Park, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SheffieldIlMember" xlink:label="adc_SheffieldIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SheffieldIlMember" xlink:to="adc_SheffieldIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SheffieldIlMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SheffieldIlMember_lbl" xml:lang="en-US">Sheffield, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SouthChicagoHeightsIlMember" xlink:label="adc_SouthChicagoHeightsIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SouthChicagoHeightsIlMember" xlink:to="adc_SouthChicagoHeightsIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SouthChicagoHeightsIlMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SouthChicagoHeightsIlMember_lbl" xml:lang="en-US">South Chicago Heights, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SouthElginIlMember" xlink:label="adc_SouthElginIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SouthElginIlMember" xlink:to="adc_SouthElginIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SouthElginIlMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SouthElginIlMember_lbl" xml:lang="en-US">South Elgin, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SouthElginIl1Member" xlink:label="adc_SouthElginIl1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SouthElginIl1Member" xlink:to="adc_SouthElginIl1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SouthElginIl1Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SouthElginIl1Member_lbl" xml:lang="en-US">South Elgin, IL 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_StreatorIlMember" xlink:label="adc_StreatorIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_StreatorIlMember" xlink:to="adc_StreatorIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_StreatorIlMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_StreatorIlMember_lbl" xml:lang="en-US">Streator, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WestchesterIlMember" xlink:label="adc_WestchesterIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WestchesterIlMember" xlink:to="adc_WestchesterIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WestchesterIlMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WestchesterIlMember_lbl" xml:lang="en-US">Westchester, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WestmontIlMember" xlink:label="adc_WestmontIlMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WestmontIlMember" xlink:to="adc_WestmontIlMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WestmontIlMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WestmontIlMember_lbl" xml:lang="en-US">Westmont, IL [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BedfordInMember" xlink:label="adc_BedfordInMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BedfordInMember" xlink:to="adc_BedfordInMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BedfordInMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BedfordInMember_lbl" xml:lang="en-US">Bedford, IN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BrownburgInMember" xlink:label="adc_BrownburgInMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BrownburgInMember" xlink:to="adc_BrownburgInMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BrownburgInMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BrownburgInMember_lbl" xml:lang="en-US">Brownburg, IN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FortWayneIn1Member" xlink:label="adc_FortWayneIn1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FortWayneIn1Member" xlink:to="adc_FortWayneIn1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FortWayneIn1Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FortWayneIn1Member_lbl" xml:lang="en-US">Fort Wayne, IN 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GrangerInMember" xlink:label="adc_GrangerInMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GrangerInMember" xlink:to="adc_GrangerInMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GrangerInMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GrangerInMember_lbl" xml:lang="en-US">Granger, IN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_IndianapolisIn5Member" xlink:label="adc_IndianapolisIn5Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_IndianapolisIn5Member" xlink:to="adc_IndianapolisIn5Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_IndianapolisIn5Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_IndianapolisIn5Member_lbl" xml:lang="en-US">Indianapolis, IN 5 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AtchisonKs1Member" xlink:label="adc_AtchisonKs1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AtchisonKs1Member" xlink:to="adc_AtchisonKs1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AtchisonKs1Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AtchisonKs1Member_lbl" xml:lang="en-US">Atchison, KS 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_KiowaKsMember" xlink:label="adc_KiowaKsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_KiowaKsMember" xlink:to="adc_KiowaKsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_KiowaKsMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_KiowaKsMember_lbl" xml:lang="en-US">Kiowa, KS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LiberalKsMember" xlink:label="adc_LiberalKsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LiberalKsMember" xlink:to="adc_LiberalKsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LiberalKsMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LiberalKsMember_lbl" xml:lang="en-US">Liberal, KS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ManhattanKsMember" xlink:label="adc_ManhattanKsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ManhattanKsMember" xlink:to="adc_ManhattanKsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ManhattanKsMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ManhattanKsMember_lbl" xml:lang="en-US">Manhattan, KS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MerriamKsMember" xlink:label="adc_MerriamKsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MerriamKsMember" xlink:to="adc_MerriamKsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MerriamKsMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MerriamKsMember_lbl" xml:lang="en-US">Merriam, KS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LouisvilleKy2Member" xlink:label="adc_LouisvilleKy2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LouisvilleKy2Member" xlink:to="adc_LouisvilleKy2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LouisvilleKy2Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LouisvilleKy2Member_lbl" xml:lang="en-US">Louisville, KY 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BossierCityLa2Member" xlink:label="adc_BossierCityLa2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BossierCityLa2Member" xlink:to="adc_BossierCityLa2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BossierCityLa2Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BossierCityLa2Member_lbl" xml:lang="en-US">Bossier City, LA 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChalmetteLa1Member" xlink:label="adc_ChalmetteLa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChalmetteLa1Member" xlink:to="adc_ChalmetteLa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ChalmetteLa1Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChalmetteLa1Member_lbl" xml:lang="en-US">Chalmette, LA 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ClintonLaMember" xlink:label="adc_ClintonLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ClintonLaMember" xlink:to="adc_ClintonLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ClintonLaMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ClintonLaMember_lbl" xml:lang="en-US">Clinton, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_IndependenceLaMember" xlink:label="adc_IndependenceLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_IndependenceLaMember" xlink:to="adc_IndependenceLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_IndependenceLaMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_IndependenceLaMember_lbl" xml:lang="en-US">Independence, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LakeCharlesLa2Member" xlink:label="adc_LakeCharlesLa2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LakeCharlesLa2Member" xlink:to="adc_LakeCharlesLa2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LakeCharlesLa2Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LakeCharlesLa2Member_lbl" xml:lang="en-US">Lake Charles, LA 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PinevilleLaMember" xlink:label="adc_PinevilleLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PinevilleLaMember" xlink:to="adc_PinevilleLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PinevilleLaMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PinevilleLaMember_lbl" xml:lang="en-US">Pineville, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WalkerLaMember" xlink:label="adc_WalkerLaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WalkerLaMember" xlink:to="adc_WalkerLaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WalkerLaMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WalkerLaMember_lbl" xml:lang="en-US">Walker, LA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AbingdonMaMember" xlink:label="adc_AbingdonMaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AbingdonMaMember" xlink:to="adc_AbingdonMaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AbingdonMaMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AbingdonMaMember_lbl" xml:lang="en-US">Abingdon, MA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FallRiverMaMember" xlink:label="adc_FallRiverMaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FallRiverMaMember" xlink:to="adc_FallRiverMaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FallRiverMaMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FallRiverMaMember_lbl" xml:lang="en-US">Fall River, MA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PittsfieldMa2Member" xlink:label="adc_PittsfieldMa2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PittsfieldMa2Member" xlink:to="adc_PittsfieldMa2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PittsfieldMa2Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PittsfieldMa2Member_lbl" xml:lang="en-US">Pittsfield, MA2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SpringfieldMa2Member" xlink:label="adc_SpringfieldMa2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SpringfieldMa2Member" xlink:to="adc_SpringfieldMa2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SpringfieldMa2Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SpringfieldMa2Member_lbl" xml:lang="en-US">Springfield, MA 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BaltimoreMd4Member" xlink:label="adc_BaltimoreMd4Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BaltimoreMd4Member" xlink:to="adc_BaltimoreMd4Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BaltimoreMd4Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BaltimoreMd4Member_lbl" xml:lang="en-US">Baltimore, MD 4 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BaltimoreGwynnOakMdMember" xlink:label="adc_BaltimoreGwynnOakMdMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BaltimoreGwynnOakMdMember" xlink:to="adc_BaltimoreGwynnOakMdMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BaltimoreGwynnOakMdMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BaltimoreGwynnOakMdMember_lbl" xml:lang="en-US">Baltimore (Gwynn Oak), MD [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BelAirMdMember" xlink:label="adc_BelAirMdMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BelAirMdMember" xlink:to="adc_BelAirMdMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BelAirMdMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BelAirMdMember_lbl" xml:lang="en-US">Bel Air, MD [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DundalkMdMember" xlink:label="adc_DundalkMdMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DundalkMdMember" xlink:to="adc_DundalkMdMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DundalkMdMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DundalkMdMember_lbl" xml:lang="en-US">Dundalk, MD [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BattleCreekMiMember" xlink:label="adc_BattleCreekMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BattleCreekMiMember" xlink:to="adc_BattleCreekMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BattleCreekMiMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BattleCreekMiMember_lbl" xml:lang="en-US">Battle Creek, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BattleCreekMi1Member" xlink:label="adc_BattleCreekMi1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BattleCreekMi1Member" xlink:to="adc_BattleCreekMi1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BattleCreekMi1Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BattleCreekMi1Member_lbl" xml:lang="en-US">Battle Creek, MI 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GrandRapidsMi2Member" xlink:label="adc_GrandRapidsMi2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GrandRapidsMi2Member" xlink:to="adc_GrandRapidsMi2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GrandRapidsMi2Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GrandRapidsMi2Member_lbl" xml:lang="en-US">Grand Rapids, MI 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LansingMi2Member" xlink:label="adc_LansingMi2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LansingMi2Member" xlink:to="adc_LansingMi2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LansingMi2Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LansingMi2Member_lbl" xml:lang="en-US">Lansing, MI 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LansingMi3Member" xlink:label="adc_LansingMi3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LansingMi3Member" xlink:to="adc_LansingMi3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LansingMi3Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LansingMi3Member_lbl" xml:lang="en-US">Lansing, MI 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OkemosMiMember" xlink:label="adc_OkemosMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OkemosMiMember" xlink:to="adc_OkemosMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OkemosMiMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OkemosMiMember_lbl" xml:lang="en-US">Okemos, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SaginawMiMember" xlink:label="adc_SaginawMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SaginawMiMember" xlink:to="adc_SaginawMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SaginawMiMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SaginawMiMember_lbl" xml:lang="en-US">Saginaw, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SaginawMi1Member" xlink:label="adc_SaginawMi1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SaginawMi1Member" xlink:to="adc_SaginawMi1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SaginawMi1Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SaginawMi1Member_lbl" xml:lang="en-US">Saginaw, MI 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SaginawMi2Member" xlink:label="adc_SaginawMi2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SaginawMi2Member" xlink:to="adc_SaginawMi2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SaginawMi2Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SaginawMi2Member_lbl" xml:lang="en-US">Saginaw, MI 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SterlingHeightsMiMember" xlink:label="adc_SterlingHeightsMiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SterlingHeightsMiMember" xlink:to="adc_SterlingHeightsMiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SterlingHeightsMiMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SterlingHeightsMiMember_lbl" xml:lang="en-US">Sterling Heights, MI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TaylorMi2Member" xlink:label="adc_TaylorMi2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TaylorMi2Member" xlink:to="adc_TaylorMi2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TaylorMi2Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TaylorMi2Member_lbl" xml:lang="en-US">Taylor, MI 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BrooklynParkMnMember" xlink:label="adc_BrooklynParkMnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BrooklynParkMnMember" xlink:to="adc_BrooklynParkMnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BrooklynParkMnMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BrooklynParkMnMember_lbl" xml:lang="en-US">Brooklyn Park, MN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BurnsvilleMnMember" xlink:label="adc_BurnsvilleMnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BurnsvilleMnMember" xlink:to="adc_BurnsvilleMnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BurnsvilleMnMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BurnsvilleMnMember_lbl" xml:lang="en-US">Burnsville, MN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FridleyMnMember" xlink:label="adc_FridleyMnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FridleyMnMember" xlink:to="adc_FridleyMnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FridleyMnMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FridleyMnMember_lbl" xml:lang="en-US">Fridley, MN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LakevilleMn1Member" xlink:label="adc_LakevilleMn1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LakevilleMn1Member" xlink:to="adc_LakevilleMn1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LakevilleMn1Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LakevilleMn1Member_lbl" xml:lang="en-US">Lakeville, MN 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OakdaleMnMember" xlink:label="adc_OakdaleMnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OakdaleMnMember" xlink:to="adc_OakdaleMnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OakdaleMnMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OakdaleMnMember_lbl" xml:lang="en-US">Oakdale, MN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SavageMnMember" xlink:label="adc_SavageMnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SavageMnMember" xlink:to="adc_SavageMnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SavageMnMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SavageMnMember_lbl" xml:lang="en-US">Savage, MN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CaliforniaMoMember" xlink:label="adc_CaliforniaMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CaliforniaMoMember" xlink:to="adc_CaliforniaMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CaliforniaMoMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CaliforniaMoMember_lbl" xml:lang="en-US">California, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MarshfieldMoMember" xlink:label="adc_MarshfieldMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MarshfieldMoMember" xlink:to="adc_MarshfieldMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MarshfieldMoMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MarshfieldMoMember_lbl" xml:lang="en-US">Marshfield, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PevelyMoMember" xlink:label="adc_PevelyMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PevelyMoMember" xlink:to="adc_PevelyMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PevelyMoMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PevelyMoMember_lbl" xml:lang="en-US">Pevely, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SugarCreekMoMember" xlink:label="adc_SugarCreekMoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SugarCreekMoMember" xlink:to="adc_SugarCreekMoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SugarCreekMoMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SugarCreekMoMember_lbl" xml:lang="en-US">Sugar Creek, MO [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ByhaliaMsMember" xlink:label="adc_ByhaliaMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ByhaliaMsMember" xlink:to="adc_ByhaliaMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ByhaliaMsMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ByhaliaMsMember_lbl" xml:lang="en-US">Byhalia, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ByramMsMember" xlink:label="adc_ByramMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ByramMsMember" xlink:to="adc_ByramMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ByramMsMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ByramMsMember_lbl" xml:lang="en-US">Byram, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_VicksburgMsMember" xlink:label="adc_VicksburgMsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_VicksburgMsMember" xlink:to="adc_VicksburgMsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_VicksburgMsMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_VicksburgMsMember_lbl" xml:lang="en-US">Vicksburg, MS [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SidneyMtMember" xlink:label="adc_SidneyMtMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SidneyMtMember" xlink:to="adc_SidneyMtMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SidneyMtMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SidneyMtMember_lbl" xml:lang="en-US">Sidney, MT [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CaryNc1Member" xlink:label="adc_CaryNc1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CaryNc1Member" xlink:to="adc_CaryNc1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CaryNc1Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CaryNc1Member_lbl" xml:lang="en-US">Cary, NC 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CaryNc2Member" xlink:label="adc_CaryNc2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CaryNc2Member" xlink:to="adc_CaryNc2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CaryNc2Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CaryNc2Member_lbl" xml:lang="en-US">Cary, NC 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CharlotteNc3Member" xlink:label="adc_CharlotteNc3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CharlotteNc3Member" xlink:to="adc_CharlotteNc3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CharlotteNc3Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CharlotteNc3Member_lbl" xml:lang="en-US">Charlotte, NC 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DenverNcMember" xlink:label="adc_DenverNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DenverNcMember" xlink:to="adc_DenverNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DenverNcMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DenverNcMember_lbl" xml:lang="en-US">Denver, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DenverNc1Member" xlink:label="adc_DenverNc1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DenverNc1Member" xlink:to="adc_DenverNc1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DenverNc1Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DenverNc1Member_lbl" xml:lang="en-US">Denver, NC 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GarnerNc1Member" xlink:label="adc_GarnerNc1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GarnerNc1Member" xlink:to="adc_GarnerNc1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GarnerNc1Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GarnerNc1Member_lbl" xml:lang="en-US">Garner, NC 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GastoniaNc1Member" xlink:label="adc_GastoniaNc1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GastoniaNc1Member" xlink:to="adc_GastoniaNc1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GastoniaNc1Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GastoniaNc1Member_lbl" xml:lang="en-US">Gastonia, NC 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HickoryNcMember" xlink:label="adc_HickoryNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HickoryNcMember" xlink:to="adc_HickoryNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HickoryNcMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HickoryNcMember_lbl" xml:lang="en-US">Hickory, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HighPointNc1Member" xlink:label="adc_HighPointNc1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HighPointNc1Member" xlink:to="adc_HighPointNc1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HighPointNc1Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HighPointNc1Member_lbl" xml:lang="en-US">High Point, NC 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HollySpringsNcMember" xlink:label="adc_HollySpringsNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HollySpringsNcMember" xlink:to="adc_HollySpringsNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HollySpringsNcMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HollySpringsNcMember_lbl" xml:lang="en-US">Holly Springs, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HollySpringsNc1Member" xlink:label="adc_HollySpringsNc1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HollySpringsNc1Member" xlink:to="adc_HollySpringsNc1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HollySpringsNc1Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HollySpringsNc1Member_lbl" xml:lang="en-US">Holly Springs, NC 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HollySpringsNc2Member" xlink:label="adc_HollySpringsNc2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HollySpringsNc2Member" xlink:to="adc_HollySpringsNc2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HollySpringsNc2Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HollySpringsNc2Member_lbl" xml:lang="en-US">Holly Springs, NC 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HollySpringsNc3Member" xlink:label="adc_HollySpringsNc3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HollySpringsNc3Member" xlink:to="adc_HollySpringsNc3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HollySpringsNc3Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HollySpringsNc3Member_lbl" xml:lang="en-US">Holly Springs, NC 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HollySpringsNc4Member" xlink:label="adc_HollySpringsNc4Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HollySpringsNc4Member" xlink:to="adc_HollySpringsNc4Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HollySpringsNc4Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HollySpringsNc4Member_lbl" xml:lang="en-US">Holly Springs, NC 4 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HollySpringsNc5Member" xlink:label="adc_HollySpringsNc5Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HollySpringsNc5Member" xlink:to="adc_HollySpringsNc5Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HollySpringsNc5Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HollySpringsNc5Member_lbl" xml:lang="en-US">Holly Springs, NC 5 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_Mt.AiryNcMember" xlink:label="adc_Mt.AiryNcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_Mt.AiryNcMember" xlink:to="adc_Mt.AiryNcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_Mt.AiryNcMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_Mt.AiryNcMember_lbl" xml:lang="en-US">Mt. Airy, NC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_StatesvilleNc1Member" xlink:label="adc_StatesvilleNc1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_StatesvilleNc1Member" xlink:to="adc_StatesvilleNc1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_StatesvilleNc1Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_StatesvilleNc1Member_lbl" xml:lang="en-US">Statesville, NC 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_StatesvilleNc2Member" xlink:label="adc_StatesvilleNc2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_StatesvilleNc2Member" xlink:to="adc_StatesvilleNc2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_StatesvilleNc2Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_StatesvilleNc2Member_lbl" xml:lang="en-US">Statesville, NC 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WilmingtonNc1Member" xlink:label="adc_WilmingtonNc1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WilmingtonNc1Member" xlink:to="adc_WilmingtonNc1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WilmingtonNc1Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WilmingtonNc1Member_lbl" xml:lang="en-US">Wilmington, NC 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BottineauNdMember" xlink:label="adc_BottineauNdMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BottineauNdMember" xlink:to="adc_BottineauNdMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BottineauNdMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BottineauNdMember_lbl" xml:lang="en-US">Bottineau, ND [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BlairNeMember" xlink:label="adc_BlairNeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BlairNeMember" xlink:to="adc_BlairNeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BlairNeMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BlairNeMember_lbl" xml:lang="en-US">Blair, NE [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CreteNeMember" xlink:label="adc_CreteNeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CreteNeMember" xlink:to="adc_CreteNeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CreteNeMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CreteNeMember_lbl" xml:lang="en-US">Crete, NE [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ValentineNeMember" xlink:label="adc_ValentineNeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ValentineNeMember" xlink:to="adc_ValentineNeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ValentineNeMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ValentineNeMember_lbl" xml:lang="en-US">Valentine, NE [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WayneNeMember" xlink:label="adc_WayneNeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WayneNeMember" xlink:to="adc_WayneNeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WayneNeMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WayneNeMember_lbl" xml:lang="en-US">Wayne, NE [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HooksettNhMember" xlink:label="adc_HooksettNhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HooksettNhMember" xlink:to="adc_HooksettNhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HooksettNhMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HooksettNhMember_lbl" xml:lang="en-US">Hooksett, NH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HooksettNh1Member" xlink:label="adc_HooksettNh1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HooksettNh1Member" xlink:to="adc_HooksettNh1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HooksettNh1Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HooksettNh1Member_lbl" xml:lang="en-US">Hooksett, NH 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BellmawrNjMember" xlink:label="adc_BellmawrNjMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BellmawrNjMember" xlink:to="adc_BellmawrNjMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BellmawrNjMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BellmawrNjMember_lbl" xml:lang="en-US">Bellmawr, NJ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BerlinNjMember" xlink:label="adc_BerlinNjMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BerlinNjMember" xlink:to="adc_BerlinNjMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BerlinNjMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BerlinNjMember_lbl" xml:lang="en-US">Berlin, NJ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EastHanoverNjMember" xlink:label="adc_EastHanoverNjMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EastHanoverNjMember" xlink:to="adc_EastHanoverNjMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_EastHanoverNjMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EastHanoverNjMember_lbl" xml:lang="en-US">East Hanover, NJ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EastHanoverNj1Member" xlink:label="adc_EastHanoverNj1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EastHanoverNj1Member" xlink:to="adc_EastHanoverNj1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_EastHanoverNj1Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EastHanoverNj1Member_lbl" xml:lang="en-US">East Hanover, NJ 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EatontownNjMember" xlink:label="adc_EatontownNjMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EatontownNjMember" xlink:to="adc_EatontownNjMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_EatontownNjMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EatontownNjMember_lbl" xml:lang="en-US">Eatontown, NJ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ElizabethNjMember" xlink:label="adc_ElizabethNjMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ElizabethNjMember" xlink:to="adc_ElizabethNjMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ElizabethNjMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ElizabethNjMember_lbl" xml:lang="en-US">Elizabeth, NJ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HammontonNjMember" xlink:label="adc_HammontonNjMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HammontonNjMember" xlink:to="adc_HammontonNjMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HammontonNjMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HammontonNjMember_lbl" xml:lang="en-US">Hammonton, NJ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LawrencevilleNj1Member" xlink:label="adc_LawrencevilleNj1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LawrencevilleNj1Member" xlink:to="adc_LawrencevilleNj1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LawrencevilleNj1Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LawrencevilleNj1Member_lbl" xml:lang="en-US">Lawrenceville, NJ 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LawrencevilleNj2Member" xlink:label="adc_LawrencevilleNj2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LawrencevilleNj2Member" xlink:to="adc_LawrencevilleNj2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LawrencevilleNj2Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LawrencevilleNj2Member_lbl" xml:lang="en-US">Lawrenceville, NJ 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LawrencevilleNj3Member" xlink:label="adc_LawrencevilleNj3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LawrencevilleNj3Member" xlink:to="adc_LawrencevilleNj3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LawrencevilleNj3Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LawrencevilleNj3Member_lbl" xml:lang="en-US">Lawrenceville, NJ 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LawrencevilleNj4Member" xlink:label="adc_LawrencevilleNj4Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LawrencevilleNj4Member" xlink:to="adc_LawrencevilleNj4Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LawrencevilleNj4Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LawrencevilleNj4Member_lbl" xml:lang="en-US">Lawrenceville, NJ 4 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LawrencevilleNj5Member" xlink:label="adc_LawrencevilleNj5Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LawrencevilleNj5Member" xlink:to="adc_LawrencevilleNj5Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LawrencevilleNj5Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LawrencevilleNj5Member_lbl" xml:lang="en-US">Lawrenceville, NJ 5 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NorthPlainfieldNjMember" xlink:label="adc_NorthPlainfieldNjMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NorthPlainfieldNjMember" xlink:to="adc_NorthPlainfieldNjMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NorthPlainfieldNjMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NorthPlainfieldNjMember_lbl" xml:lang="en-US">North Plainfield, NJ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ParsippanyNjMember" xlink:label="adc_ParsippanyNjMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ParsippanyNjMember" xlink:to="adc_ParsippanyNjMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ParsippanyNjMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ParsippanyNjMember_lbl" xml:lang="en-US">Parsippany, NJ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ParsippanyNj1Member" xlink:label="adc_ParsippanyNj1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ParsippanyNj1Member" xlink:to="adc_ParsippanyNj1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ParsippanyNj1Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ParsippanyNj1Member_lbl" xml:lang="en-US">Parsippany, NJ 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ParsippanyNj2Member" xlink:label="adc_ParsippanyNj2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ParsippanyNj2Member" xlink:to="adc_ParsippanyNj2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ParsippanyNj2Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ParsippanyNj2Member_lbl" xml:lang="en-US">Parsippany, NJ 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PennsaukenNj3Member" xlink:label="adc_PennsaukenNj3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PennsaukenNj3Member" xlink:to="adc_PennsaukenNj3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PennsaukenNj3Member_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PennsaukenNj3Member_lbl" xml:lang="en-US">Pennsauken, NJ 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RandolphNjMember" xlink:label="adc_RandolphNjMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RandolphNjMember" xlink:to="adc_RandolphNjMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RandolphNjMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RandolphNjMember_lbl" xml:lang="en-US">Randolph, NJ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_UpperDeerfieldNjMember" xlink:label="adc_UpperDeerfieldNjMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_UpperDeerfieldNjMember" xlink:to="adc_UpperDeerfieldNjMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_UpperDeerfieldNjMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_UpperDeerfieldNjMember_lbl" xml:lang="en-US">Upper Deerfield, NJ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WhippanyNjMember" xlink:label="adc_WhippanyNjMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WhippanyNjMember" xlink:to="adc_WhippanyNjMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WhippanyNjMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WhippanyNjMember_lbl" xml:lang="en-US">Whippany, NJ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WoodbineNjMember" xlink:label="adc_WoodbineNjMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WoodbineNjMember" xlink:to="adc_WoodbineNjMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WoodbineNjMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WoodbineNjMember_lbl" xml:lang="en-US">Woodbine, NJ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WoodbridgeNjMember" xlink:label="adc_WoodbridgeNjMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WoodbridgeNjMember" xlink:to="adc_WoodbridgeNjMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WoodbridgeNjMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WoodbridgeNjMember_lbl" xml:lang="en-US">Woodbridge, NJ [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AlbuquerqueNmMember" xlink:label="adc_AlbuquerqueNmMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AlbuquerqueNmMember" xlink:to="adc_AlbuquerqueNmMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AlbuquerqueNmMember_lbl" xml:lang="en-US">Na</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AlbuquerqueNmMember_lbl" xml:lang="en-US">Albuquerque, NM [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AlbuquerqueNm1Member" xlink:label="adc_AlbuquerqueNm1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AlbuquerqueNm1Member" xlink:to="adc_AlbuquerqueNm1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AlbuquerqueNm1Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AlbuquerqueNm1Member_lbl" xml:lang="en-US">Albuquerque, NM 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AlbuquerqueNm2Member" xlink:label="adc_AlbuquerqueNm2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AlbuquerqueNm2Member" xlink:to="adc_AlbuquerqueNm2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AlbuquerqueNm2Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AlbuquerqueNm2Member_lbl" xml:lang="en-US">Albuquerque, NM 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EspanolaNmMember" xlink:label="adc_EspanolaNmMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EspanolaNmMember" xlink:to="adc_EspanolaNmMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_EspanolaNmMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EspanolaNmMember_lbl" xml:lang="en-US">Espanola, NM [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_KingstonNyMember" xlink:label="adc_KingstonNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_KingstonNyMember" xlink:to="adc_KingstonNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_KingstonNyMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_KingstonNyMember_lbl" xml:lang="en-US">Kingston, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NewRochelleNyMember" xlink:label="adc_NewRochelleNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NewRochelleNyMember" xlink:to="adc_NewRochelleNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NewRochelleNyMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NewRochelleNyMember_lbl" xml:lang="en-US">New Rochelle, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NiagaraFallsNy1Member" xlink:label="adc_NiagaraFallsNy1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NiagaraFallsNy1Member" xlink:to="adc_NiagaraFallsNy1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NiagaraFallsNy1Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NiagaraFallsNy1Member_lbl" xml:lang="en-US">Niagara Falls, NY 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NorthBabylonNyMember" xlink:label="adc_NorthBabylonNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NorthBabylonNyMember" xlink:to="adc_NorthBabylonNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NorthBabylonNyMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NorthBabylonNyMember_lbl" xml:lang="en-US">North Babylon, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PlattsburghNyMember" xlink:label="adc_PlattsburghNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PlattsburghNyMember" xlink:to="adc_PlattsburghNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PlattsburghNyMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PlattsburghNyMember_lbl" xml:lang="en-US">Plattsburgh, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RochesterNy5Member" xlink:label="adc_RochesterNy5Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RochesterNy5Member" xlink:to="adc_RochesterNy5Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RochesterNy5Member_lbl" xml:lang="en-US">N/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RochesterNy5Member_lbl" xml:lang="en-US">Rochester, NY 5 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ScarsdaleNyMember" xlink:label="adc_ScarsdaleNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ScarsdaleNyMember" xlink:to="adc_ScarsdaleNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ScarsdaleNyMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ScarsdaleNyMember_lbl" xml:lang="en-US">Scarsdale, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WappingersFallsNyMember" xlink:label="adc_WappingersFallsNyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WappingersFallsNyMember" xlink:to="adc_WappingersFallsNyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WappingersFallsNyMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WappingersFallsNyMember_lbl" xml:lang="en-US">Wappingers Falls, NY [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BedfordOhMember" xlink:label="adc_BedfordOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BedfordOhMember" xlink:to="adc_BedfordOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BedfordOhMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BedfordOhMember_lbl" xml:lang="en-US">Bedford, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CantonOh1Member" xlink:label="adc_CantonOh1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CantonOh1Member" xlink:to="adc_CantonOh1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CantonOh1Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CantonOh1Member_lbl" xml:lang="en-US">Canton, OH 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChesepeakeOhMember" xlink:label="adc_ChesepeakeOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChesepeakeOhMember" xlink:to="adc_ChesepeakeOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ChesepeakeOhMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChesepeakeOhMember_lbl" xml:lang="en-US">Chesepeake, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ColumbusOh5Member" xlink:label="adc_ColumbusOh5Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ColumbusOh5Member" xlink:to="adc_ColumbusOh5Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ColumbusOh5Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ColumbusOh5Member_lbl" xml:lang="en-US">Columbus, OH 5 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DaytonOhMember" xlink:label="adc_DaytonOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DaytonOhMember" xlink:to="adc_DaytonOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DaytonOhMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DaytonOhMember_lbl" xml:lang="en-US">Dayton, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FairviewParkOh1Member" xlink:label="adc_FairviewParkOh1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FairviewParkOh1Member" xlink:to="adc_FairviewParkOh1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FairviewParkOh1Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FairviewParkOh1Member_lbl" xml:lang="en-US">Fairview Park, OH 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GallipolisOhMember" xlink:label="adc_GallipolisOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GallipolisOhMember" xlink:to="adc_GallipolisOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GallipolisOhMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GallipolisOhMember_lbl" xml:lang="en-US">Gallipolis, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GenevaOhMember" xlink:label="adc_GenevaOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GenevaOhMember" xlink:to="adc_GenevaOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GenevaOhMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GenevaOhMember_lbl" xml:lang="en-US">Geneva, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GroveportOhMember" xlink:label="adc_GroveportOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GroveportOhMember" xlink:to="adc_GroveportOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GroveportOhMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GroveportOhMember_lbl" xml:lang="en-US">Groveport, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HillardOh1Member" xlink:label="adc_HillardOh1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HillardOh1Member" xlink:to="adc_HillardOh1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HillardOh1Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HillardOh1Member_lbl" xml:lang="en-US">Hillard, OH 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HilliardOh1Member" xlink:label="adc_HilliardOh1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HilliardOh1Member" xlink:to="adc_HilliardOh1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HilliardOh1Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HilliardOh1Member_lbl" xml:lang="en-US">Hilliard, OH 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HilliardOh2Member" xlink:label="adc_HilliardOh2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HilliardOh2Member" xlink:to="adc_HilliardOh2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HilliardOh2Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HilliardOh2Member_lbl" xml:lang="en-US">Hilliard, OH 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HilliardOh3Member" xlink:label="adc_HilliardOh3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HilliardOh3Member" xlink:to="adc_HilliardOh3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HilliardOh3Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HilliardOh3Member_lbl" xml:lang="en-US">Hilliard, OH 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HilliardOh4Member" xlink:label="adc_HilliardOh4Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HilliardOh4Member" xlink:to="adc_HilliardOh4Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HilliardOh4Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HilliardOh4Member_lbl" xml:lang="en-US">Hilliard, OH 4 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MentorOh5Member" xlink:label="adc_MentorOh5Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MentorOh5Member" xlink:to="adc_MentorOh5Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MentorOh5Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MentorOh5Member_lbl" xml:lang="en-US">Mentor, OH 5 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MilfordCenterOhMember" xlink:label="adc_MilfordCenterOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MilfordCenterOhMember" xlink:to="adc_MilfordCenterOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MilfordCenterOhMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MilfordCenterOhMember_lbl" xml:lang="en-US">Milford Center, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NwLexingtonOhMember" xlink:label="adc_NwLexingtonOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NwLexingtonOhMember" xlink:to="adc_NwLexingtonOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NwLexingtonOhMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NwLexingtonOhMember_lbl" xml:lang="en-US">NW Lexington, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OctaOhMember" xlink:label="adc_OctaOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OctaOhMember" xlink:to="adc_OctaOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OctaOhMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OctaOhMember_lbl" xml:lang="en-US">Octa, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PataskalaOhMember" xlink:label="adc_PataskalaOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PataskalaOhMember" xlink:to="adc_PataskalaOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PataskalaOhMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PataskalaOhMember_lbl" xml:lang="en-US">Pataskala, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ReynoldsburgOh1Member" xlink:label="adc_ReynoldsburgOh1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ReynoldsburgOh1Member" xlink:to="adc_ReynoldsburgOh1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ReynoldsburgOh1Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ReynoldsburgOh1Member_lbl" xml:lang="en-US">Reynoldsburg, OH 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RockyRiverOhMember" xlink:label="adc_RockyRiverOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RockyRiverOhMember" xlink:to="adc_RockyRiverOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RockyRiverOhMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RockyRiverOhMember_lbl" xml:lang="en-US">Rocky River, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RockyRiverOh1Member" xlink:label="adc_RockyRiverOh1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RockyRiverOh1Member" xlink:to="adc_RockyRiverOh1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RockyRiverOh1Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RockyRiverOh1Member_lbl" xml:lang="en-US">Rocky River, OH 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RockyRiverOh2Member" xlink:label="adc_RockyRiverOh2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RockyRiverOh2Member" xlink:to="adc_RockyRiverOh2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RockyRiverOh2Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RockyRiverOh2Member_lbl" xml:lang="en-US">Rocky River, OH 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SidneyOhMember" xlink:label="adc_SidneyOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SidneyOhMember" xlink:to="adc_SidneyOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SidneyOhMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SidneyOhMember_lbl" xml:lang="en-US">Sidney, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_StreetsboroOhMember" xlink:label="adc_StreetsboroOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_StreetsboroOhMember" xlink:to="adc_StreetsboroOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_StreetsboroOhMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_StreetsboroOhMember_lbl" xml:lang="en-US">Streetsboro, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ToledoOh6Member" xlink:label="adc_ToledoOh6Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ToledoOh6Member" xlink:to="adc_ToledoOh6Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ToledoOh6Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ToledoOh6Member_lbl" xml:lang="en-US">Toledo, OH 6 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_UrbanaOhMember" xlink:label="adc_UrbanaOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_UrbanaOhMember" xlink:to="adc_UrbanaOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_UrbanaOhMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_UrbanaOhMember_lbl" xml:lang="en-US">Urbana, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WinchesterOhMember" xlink:label="adc_WinchesterOhMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WinchesterOhMember" xlink:to="adc_WinchesterOhMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WinchesterOhMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WinchesterOhMember_lbl" xml:lang="en-US">Winchester, OH [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AtokaOkMember" xlink:label="adc_AtokaOkMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AtokaOkMember" xlink:to="adc_AtokaOkMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AtokaOkMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AtokaOkMember_lbl" xml:lang="en-US">Atoka, OK [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_StillwaterOkMember" xlink:label="adc_StillwaterOkMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_StillwaterOkMember" xlink:to="adc_StillwaterOkMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_StillwaterOkMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_StillwaterOkMember_lbl" xml:lang="en-US">Stillwater, OK [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TillamookOrMember" xlink:label="adc_TillamookOrMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TillamookOrMember" xlink:to="adc_TillamookOrMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TillamookOrMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TillamookOrMember_lbl" xml:lang="en-US">Tillamook, OR [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CranberryPaMember" xlink:label="adc_CranberryPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CranberryPaMember" xlink:to="adc_CranberryPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CranberryPaMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CranberryPaMember_lbl" xml:lang="en-US">Cranberry, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_DunmorePaMember" xlink:label="adc_DunmorePaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_DunmorePaMember" xlink:to="adc_DunmorePaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_DunmorePaMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_DunmorePaMember_lbl" xml:lang="en-US">Dunmore, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EriePa2Member" xlink:label="adc_EriePa2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EriePa2Member" xlink:to="adc_EriePa2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_EriePa2Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EriePa2Member_lbl" xml:lang="en-US">Erie, PA 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_GreenvillePaMember" xlink:label="adc_GreenvillePaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_GreenvillePaMember" xlink:to="adc_GreenvillePaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_GreenvillePaMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_GreenvillePaMember_lbl" xml:lang="en-US">Greenville, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HarrisburgPa1Member" xlink:label="adc_HarrisburgPa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HarrisburgPa1Member" xlink:to="adc_HarrisburgPa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HarrisburgPa1Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HarrisburgPa1Member_lbl" xml:lang="en-US">Harrisburg , PA 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PhiladelphiaPa3Member" xlink:label="adc_PhiladelphiaPa3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PhiladelphiaPa3Member" xlink:to="adc_PhiladelphiaPa3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PhiladelphiaPa3Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PhiladelphiaPa3Member_lbl" xml:lang="en-US">Philadelphia, PA 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_QuakertownPaMember" xlink:label="adc_QuakertownPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_QuakertownPaMember" xlink:to="adc_QuakertownPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_QuakertownPaMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_QuakertownPaMember_lbl" xml:lang="en-US">Quakertown, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WestMifflinPaMember" xlink:label="adc_WestMifflinPaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WestMifflinPaMember" xlink:to="adc_WestMifflinPaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WestMifflinPaMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WestMifflinPaMember_lbl" xml:lang="en-US">West Mifflin, PA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AndersonSc1Member" xlink:label="adc_AndersonSc1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AndersonSc1Member" xlink:to="adc_AndersonSc1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AndersonSc1Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AndersonSc1Member_lbl" xml:lang="en-US">Anderson, SC 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BlufftonScMember" xlink:label="adc_BlufftonScMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BlufftonScMember" xlink:to="adc_BlufftonScMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BlufftonScMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BlufftonScMember_lbl" xml:lang="en-US">Bluffton, SC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ColumbiaSc5Member" xlink:label="adc_ColumbiaSc5Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ColumbiaSc5Member" xlink:to="adc_ColumbiaSc5Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ColumbiaSc5Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ColumbiaSc5Member_lbl" xml:lang="en-US">Columbia, SC 5 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_FortMillSc1Member" xlink:label="adc_FortMillSc1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_FortMillSc1Member" xlink:to="adc_FortMillSc1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_FortMillSc1Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_FortMillSc1Member_lbl" xml:lang="en-US">Fort Mill, SC 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LancasterScMember" xlink:label="adc_LancasterScMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LancasterScMember" xlink:to="adc_LancasterScMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LancasterScMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LancasterScMember_lbl" xml:lang="en-US">Lancaster, SC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OlantaScMember" xlink:label="adc_OlantaScMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OlantaScMember" xlink:to="adc_OlantaScMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OlantaScMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OlantaScMember_lbl" xml:lang="en-US">Olanta, SC [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SumterSc2Member" xlink:label="adc_SumterSc2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SumterSc2Member" xlink:to="adc_SumterSc2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SumterSc2Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SumterSc2Member_lbl" xml:lang="en-US">Sumter, SC 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PierreSdMember" xlink:label="adc_PierreSdMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PierreSdMember" xlink:to="adc_PierreSdMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PierreSdMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PierreSdMember_lbl" xml:lang="en-US">Pierre, SD [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WatertownSdMember" xlink:label="adc_WatertownSdMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WatertownSdMember" xlink:to="adc_WatertownSdMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WatertownSdMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WatertownSdMember_lbl" xml:lang="en-US">Watertown, SD [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AntiochTnMember" xlink:label="adc_AntiochTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AntiochTnMember" xlink:to="adc_AntiochTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AntiochTnMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AntiochTnMember_lbl" xml:lang="en-US">Antioch, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ClarksvilleTnMember" xlink:label="adc_ClarksvilleTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ClarksvilleTnMember" xlink:to="adc_ClarksvilleTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ClarksvilleTnMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ClarksvilleTnMember_lbl" xml:lang="en-US">Clarksville, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CrossvilleTnMember" xlink:label="adc_CrossvilleTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CrossvilleTnMember" xlink:to="adc_CrossvilleTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CrossvilleTnMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CrossvilleTnMember_lbl" xml:lang="en-US">Crossville, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HendersonvilleTnMember" xlink:label="adc_HendersonvilleTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HendersonvilleTnMember" xlink:to="adc_HendersonvilleTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HendersonvilleTnMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HendersonvilleTnMember_lbl" xml:lang="en-US">Hendersonville, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HermitageTnMember" xlink:label="adc_HermitageTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HermitageTnMember" xlink:to="adc_HermitageTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HermitageTnMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HermitageTnMember_lbl" xml:lang="en-US">Hermitage, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_JacksonTn1Member" xlink:label="adc_JacksonTn1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_JacksonTn1Member" xlink:to="adc_JacksonTn1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_JacksonTn1Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_JacksonTn1Member_lbl" xml:lang="en-US">Jackson, TN 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_KnoxvilleTn4Member" xlink:label="adc_KnoxvilleTn4Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_KnoxvilleTn4Member" xlink:to="adc_KnoxvilleTn4Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_KnoxvilleTn4Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_KnoxvilleTn4Member_lbl" xml:lang="en-US">Knoxville, TN 4 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LakesiteTnMember" xlink:label="adc_LakesiteTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LakesiteTnMember" xlink:to="adc_LakesiteTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LakesiteTnMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LakesiteTnMember_lbl" xml:lang="en-US">Lakesite, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MadisonTnMember" xlink:label="adc_MadisonTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MadisonTnMember" xlink:to="adc_MadisonTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MadisonTnMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MadisonTnMember_lbl" xml:lang="en-US">Madison, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MurfreesboroTnMember" xlink:label="adc_MurfreesboroTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MurfreesboroTnMember" xlink:to="adc_MurfreesboroTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MurfreesboroTnMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MurfreesboroTnMember_lbl" xml:lang="en-US">Murfreesboro, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NashvilleTn2Member" xlink:label="adc_NashvilleTn2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NashvilleTn2Member" xlink:to="adc_NashvilleTn2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NashvilleTn2Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NashvilleTn2Member_lbl" xml:lang="en-US">Nashville, TN 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SmyrnaTnMember" xlink:label="adc_SmyrnaTnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SmyrnaTnMember" xlink:to="adc_SmyrnaTnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SmyrnaTnMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SmyrnaTnMember_lbl" xml:lang="en-US">Smyrna, TN [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AmarilloTxMember" xlink:label="adc_AmarilloTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AmarilloTxMember" xlink:to="adc_AmarilloTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AmarilloTxMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AmarilloTxMember_lbl" xml:lang="en-US">Amarillo, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BaytownTxMember" xlink:label="adc_BaytownTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BaytownTxMember" xlink:to="adc_BaytownTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BaytownTxMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BaytownTxMember_lbl" xml:lang="en-US">Baytown, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BurlesonTx1Member" xlink:label="adc_BurlesonTx1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BurlesonTx1Member" xlink:to="adc_BurlesonTx1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BurlesonTx1Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BurlesonTx1Member_lbl" xml:lang="en-US">Burleson, TX 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CypressTxMember" xlink:label="adc_CypressTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CypressTxMember" xlink:to="adc_CypressTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CypressTxMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CypressTxMember_lbl" xml:lang="en-US">Cypress, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ElPasoTx1Member" xlink:label="adc_ElPasoTx1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ElPasoTx1Member" xlink:to="adc_ElPasoTx1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ElPasoTx1Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ElPasoTx1Member_lbl" xml:lang="en-US">El Paso, TX 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ElPasoTx2Member" xlink:label="adc_ElPasoTx2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ElPasoTx2Member" xlink:to="adc_ElPasoTx2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ElPasoTx2Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ElPasoTx2Member_lbl" xml:lang="en-US">El Paso, TX 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_KerrvilleTxMember" xlink:label="adc_KerrvilleTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_KerrvilleTxMember" xlink:to="adc_KerrvilleTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_KerrvilleTxMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_KerrvilleTxMember_lbl" xml:lang="en-US">Kerrville, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MidlandTx1Member" xlink:label="adc_MidlandTx1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MidlandTx1Member" xlink:to="adc_MidlandTx1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MidlandTx1Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MidlandTx1Member_lbl" xml:lang="en-US">Midland, TX 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MonahansTxMember" xlink:label="adc_MonahansTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MonahansTxMember" xlink:to="adc_MonahansTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MonahansTxMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MonahansTxMember_lbl" xml:lang="en-US">Monahans, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OdessaTx1Member" xlink:label="adc_OdessaTx1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OdessaTx1Member" xlink:to="adc_OdessaTx1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OdessaTx1Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OdessaTx1Member_lbl" xml:lang="en-US">Odessa, TX 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OdessaTx2Member" xlink:label="adc_OdessaTx2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OdessaTx2Member" xlink:to="adc_OdessaTx2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OdessaTx2Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OdessaTx2Member_lbl" xml:lang="en-US">Odessa, TX 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OdessaTx3Member" xlink:label="adc_OdessaTx3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OdessaTx3Member" xlink:to="adc_OdessaTx3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OdessaTx3Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OdessaTx3Member_lbl" xml:lang="en-US">Odessa, TX 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RichmondTxMember" xlink:label="adc_RichmondTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RichmondTxMember" xlink:to="adc_RichmondTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RichmondTxMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RichmondTxMember_lbl" xml:lang="en-US">Richmond, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ShenandoahTxMember" xlink:label="adc_ShenandoahTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ShenandoahTxMember" xlink:to="adc_ShenandoahTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ShenandoahTxMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ShenandoahTxMember_lbl" xml:lang="en-US">Shenandoah, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SpringTxMember" xlink:label="adc_SpringTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SpringTxMember" xlink:to="adc_SpringTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SpringTxMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SpringTxMember_lbl" xml:lang="en-US">Spring, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_TexarkanaTxMember" xlink:label="adc_TexarkanaTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_TexarkanaTxMember" xlink:to="adc_TexarkanaTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_TexarkanaTxMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_TexarkanaTxMember_lbl" xml:lang="en-US">Texarkana, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WhiteOakTxMember" xlink:label="adc_WhiteOakTxMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WhiteOakTxMember" xlink:to="adc_WhiteOakTxMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WhiteOakTxMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WhiteOakTxMember_lbl" xml:lang="en-US">White Oak, TX [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_OremUtMember" xlink:label="adc_OremUtMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_OremUtMember" xlink:to="adc_OremUtMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_OremUtMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_OremUtMember_lbl" xml:lang="en-US">Orem, UT [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_CharlottesvilleVaMember" xlink:label="adc_CharlottesvilleVaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_CharlottesvilleVaMember" xlink:to="adc_CharlottesvilleVaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_CharlottesvilleVaMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_CharlottesvilleVaMember_lbl" xml:lang="en-US">Charlottesville, VA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ChesterVa2Member" xlink:label="adc_ChesterVa2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ChesterVa2Member" xlink:to="adc_ChesterVa2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ChesterVa2Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ChesterVa2Member_lbl" xml:lang="en-US">Chester, VA 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LynchburgVa1Member" xlink:label="adc_LynchburgVa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LynchburgVa1Member" xlink:to="adc_LynchburgVa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LynchburgVa1Member_lbl" xml:lang="en-US">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LynchburgVa1Member_lbl" xml:lang="en-US">Lynchburg, VA 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ManassasVa1Member" xlink:label="adc_ManassasVa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ManassasVa1Member" xlink:to="adc_ManassasVa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ManassasVa1Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ManassasVa1Member_lbl" xml:lang="en-US">Manassas, VA 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_NewportNewsVa3Member" xlink:label="adc_NewportNewsVa3Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_NewportNewsVa3Member" xlink:to="adc_NewportNewsVa3Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_NewportNewsVa3Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_NewportNewsVa3Member_lbl" xml:lang="en-US">Newport News, VA 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_WythevilleVa1Member" xlink:label="adc_WythevilleVa1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_WythevilleVa1Member" xlink:to="adc_WythevilleVa1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_WythevilleVa1Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_WythevilleVa1Member_lbl" xml:lang="en-US">Wytheville, VA 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_LakewoodWaMember" xlink:label="adc_LakewoodWaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_LakewoodWaMember" xlink:to="adc_LakewoodWaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_LakewoodWaMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_LakewoodWaMember_lbl" xml:lang="en-US">Lakewood, WA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PortAngelesWaMember" xlink:label="adc_PortAngelesWaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PortAngelesWaMember" xlink:to="adc_PortAngelesWaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PortAngelesWaMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PortAngelesWaMember_lbl" xml:lang="en-US">Port Angeles, WA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PuyallupWaMember" xlink:label="adc_PuyallupWaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PuyallupWaMember" xlink:to="adc_PuyallupWaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PuyallupWaMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PuyallupWaMember_lbl" xml:lang="en-US">Puyallup, WA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RoyWaMember" xlink:label="adc_RoyWaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RoyWaMember" xlink:to="adc_RoyWaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RoyWaMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RoyWaMember_lbl" xml:lang="en-US">Roy, WA [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AntigoWiMember" xlink:label="adc_AntigoWiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AntigoWiMember" xlink:to="adc_AntigoWiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AntigoWiMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AntigoWiMember_lbl" xml:lang="en-US">Antigo, WI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BrownDeerWiMember" xlink:label="adc_BrownDeerWiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BrownDeerWiMember" xlink:to="adc_BrownDeerWiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BrownDeerWiMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BrownDeerWiMember_lbl" xml:lang="en-US">Brown Deer, WI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_EauClaireWiMember" xlink:label="adc_EauClaireWiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_EauClaireWiMember" xlink:to="adc_EauClaireWiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_EauClaireWiMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_EauClaireWiMember_lbl" xml:lang="en-US">Eau Claire, WI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_MilwaukeeWiMember" xlink:label="adc_MilwaukeeWiMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_MilwaukeeWiMember" xlink:to="adc_MilwaukeeWiMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_MilwaukeeWiMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_MilwaukeeWiMember_lbl" xml:lang="en-US">Milwaukee, WI [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SheboyganWi1Member" xlink:label="adc_SheboyganWi1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SheboyganWi1Member" xlink:to="adc_SheboyganWi1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SheboyganWi1Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SheboyganWi1Member_lbl" xml:lang="en-US">Sheboygan, WI 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_AthensWvMember" xlink:label="adc_AthensWvMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_AthensWvMember" xlink:to="adc_AthensWvMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_AthensWvMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_AthensWvMember_lbl" xml:lang="en-US">Athens, WV [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BeckleyWv1Member" xlink:label="adc_BeckleyWv1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BeckleyWv1Member" xlink:to="adc_BeckleyWv1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BeckleyWv1Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BeckleyWv1Member_lbl" xml:lang="en-US">Beckley, WV 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_BuckhannonWvMember" xlink:label="adc_BuckhannonWvMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_BuckhannonWvMember" xlink:to="adc_BuckhannonWvMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_BuckhannonWvMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_BuckhannonWvMember_lbl" xml:lang="en-US">Buckhannon, WV [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_ElkinsWvMember" xlink:label="adc_ElkinsWvMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_ElkinsWvMember" xlink:to="adc_ElkinsWvMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_ElkinsWvMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_ElkinsWvMember_lbl" xml:lang="en-US">Elkins, WV [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HuntingtonWvMember" xlink:label="adc_HuntingtonWvMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HuntingtonWvMember" xlink:to="adc_HuntingtonWvMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HuntingtonWvMember_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HuntingtonWvMember_lbl" xml:lang="en-US">Huntington, WV [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_HuntingtonWv1Member" xlink:label="adc_HuntingtonWv1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_HuntingtonWv1Member" xlink:to="adc_HuntingtonWv1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_HuntingtonWv1Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_HuntingtonWv1Member_lbl" xml:lang="en-US">Huntington, WV 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PrincetonWv1Member" xlink:label="adc_PrincetonWv1Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PrincetonWv1Member" xlink:to="adc_PrincetonWv1Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PrincetonWv1Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PrincetonWv1Member_lbl" xml:lang="en-US">Princeton, WV 1[Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_PrincetonWv2Member" xlink:label="adc_PrincetonWv2Member" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_PrincetonWv2Member" xlink:to="adc_PrincetonWv2Member_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_PrincetonWv2Member_lbl" xml:lang="en-US">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_PrincetonWv2Member_lbl" xml:lang="en-US">Princeton, WV 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_VariousMember" xlink:label="adc_VariousMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_VariousMember" xlink:to="adc_VariousMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_VariousMember_lbl" xml:lang="en-US">Various [Member]</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SubTotalMember" xlink:label="adc_SubTotalMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SubTotalMember" xlink:to="adc_SubTotalMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SubTotalMember_lbl" xml:lang="en-US">Sub Total [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationLineItems" xlink:label="srt_RealEstateAndAccumulatedDepreciationLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RealEstateAndAccumulatedDepreciationLineItems" xlink:to="srt_RealEstateAndAccumulatedDepreciationLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_RealEstateAndAccumulatedDepreciationLineItems_lbl" xml:lang="en-US">SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances" xlink:label="srt_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances" xlink:to="srt_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances_lbl" xml:lang="en-US">SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="srt_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances_lbl" xml:lang="en-US">Real Estate and Accumulated Depreciation, Encumbrances</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand" xlink:to="us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand_lbl" xml:lang="en-US">SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand_lbl" xml:lang="en-US">Real Estate and Accumulated Depreciation, Initial Cost, Land</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements" xlink:to="us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements_lbl" xml:lang="en-US">SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements_lbl" xml:lang="en-US">Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovementsAdjusted" xlink:label="adc_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovementsAdjusted" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovementsAdjusted" xlink:to="adc_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovementsAdjusted_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovementsAdjusted_lbl" xml:lang="en-US">Initial cost of buildings and improvements for entities with a substantial portion of business acquiring and holding investment real estate. Excludes real estate not held as an investment or interest. Includes adjustments made to the balance due to the transaction.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovementsAdjusted_lbl" xml:lang="en-US">Real Estate and Accumulated Depreciation Initial Cost of Buildings and Improvements Adjusted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="adc_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovementsAdjusted_lbl" xml:lang="en-US">Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements, Adjusted</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts" xlink:to="us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts_lbl" xml:lang="en-US">SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Carrying Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts_lbl" xml:lang="en-US">Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand" xlink:to="us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand_lbl" xml:lang="en-US">SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand_lbl" xml:lang="en-US">Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements" xlink:to="us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements_lbl" xml:lang="en-US">SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements_lbl" xml:lang="en-US">Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RealEstateGrossAtCarryingValue" xlink:label="us-gaap_RealEstateGrossAtCarryingValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateGrossAtCarryingValue" xlink:to="us-gaap_RealEstateGrossAtCarryingValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateGrossAtCarryingValue_lbl" xml:lang="en-US">SEC Schedule III, Real Estate, Gross</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_RealEstateGrossAtCarryingValue_lbl" xml:lang="en-US">Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RealEstateAccumulatedDepreciation" xlink:label="us-gaap_RealEstateAccumulatedDepreciation" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateAccumulatedDepreciation" xlink:to="us-gaap_RealEstateAccumulatedDepreciation_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateAccumulatedDepreciation_lbl" xml:lang="en-US">SEC Schedule III, Real Estate Accumulated Depreciation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_RealEstateAccumulatedDepreciation_lbl" xml:lang="en-US">Real Estate and Accumulated Depreciation, Accumulated Depreciation</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RealEstateAndAccumulatedDepreciationPeriodOfConstruction" xlink:label="adc_RealEstateAndAccumulatedDepreciationPeriodOfConstruction" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RealEstateAndAccumulatedDepreciationPeriodOfConstruction" xlink:to="adc_RealEstateAndAccumulatedDepreciationPeriodOfConstruction_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RealEstateAndAccumulatedDepreciationPeriodOfConstruction_lbl" xml:lang="en-US">Period the property was constructed.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RealEstateAndAccumulatedDepreciationPeriodOfConstruction_lbl" xml:lang="en-US">Real Estate And Accumulated Depreciation Period Of Construction</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_RealEstateAndAccumulatedDepreciationPeriodOfConstruction_lbl" xml:lang="en-US">Real Estate and Accumulated Depreciation, Date of Acquisition</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1" xlink:to="us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1_lbl" xml:lang="en-US">SEC Schedule III, Real Estate and Accumulated Depreciation, Life Used for Depreciation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1_lbl" xml:lang="en-US">Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SecSchedule1228RealEstateCompaniesInvestmentInRealEstateGrossExcludingAssetsHeldForSale" xlink:label="adc_SecSchedule1228RealEstateCompaniesInvestmentInRealEstateGrossExcludingAssetsHeldForSale" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SecSchedule1228RealEstateCompaniesInvestmentInRealEstateGrossExcludingAssetsHeldForSale" xlink:to="adc_SecSchedule1228RealEstateCompaniesInvestmentInRealEstateGrossExcludingAssetsHeldForSale_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SecSchedule1228RealEstateCompaniesInvestmentInRealEstateGrossExcludingAssetsHeldForSale_lbl" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Gross, Excluding Assets Held-For-Sale</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SecSchedule1228RealEstateCompaniesInvestmentInRealEstateGrossExcludingAssetsHeldForSale_lbl" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Gross, Excluding Assets Held-For-Sale</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="adc_SecSchedule1228RealEstateCompaniesInvestmentInRealEstateGrossExcludingAssetsHeldForSale_lbl" xml:lang="en-US">Balance at December 31</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="adc_SecSchedule1228RealEstateCompaniesInvestmentInRealEstateGrossExcludingAssetsHeldForSale_lbl" xml:lang="en-US">Balance at January 1</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_RealEstateConstructionAndAcquisitionCost" xlink:label="adc_RealEstateConstructionAndAcquisitionCost" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_RealEstateConstructionAndAcquisitionCost" xlink:to="adc_RealEstateConstructionAndAcquisitionCost_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_RealEstateConstructionAndAcquisitionCost_lbl" xml:lang="en-US">Amount of real estate construction and acquisition cost incurred during the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_RealEstateConstructionAndAcquisitionCost_lbl" xml:lang="en-US">Real Estate Construction And Acquisition Cost</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="adc_RealEstateConstructionAndAcquisitionCost_lbl" xml:lang="en-US">Construction and acquisition cost</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SecSchedule1228RealEstateCompaniesInvestmentInRealEstateImpairmentCharge" xlink:label="adc_SecSchedule1228RealEstateCompaniesInvestmentInRealEstateImpairmentCharge" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SecSchedule1228RealEstateCompaniesInvestmentInRealEstateImpairmentCharge" xlink:to="adc_SecSchedule1228RealEstateCompaniesInvestmentInRealEstateImpairmentCharge_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SecSchedule1228RealEstateCompaniesInvestmentInRealEstateImpairmentCharge_lbl" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Impairment Charge</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SecSchedule1228RealEstateCompaniesInvestmentInRealEstateImpairmentCharge_lbl" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Impairment Charge</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="adc_SecSchedule1228RealEstateCompaniesInvestmentInRealEstateImpairmentCharge_lbl" xml:lang="en-US">Impairment charge</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RealEstateCostOfRealEstateSold" xlink:label="us-gaap_RealEstateCostOfRealEstateSold" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateCostOfRealEstateSold" xlink:to="us-gaap_RealEstateCostOfRealEstateSold_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateCostOfRealEstateSold_lbl" xml:lang="en-US">SEC Schedule III, Real Estate, Cost of Real Estate Sold</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_RealEstateCostOfRealEstateSold_lbl" xml:lang="en-US">Disposition of real estate</label>
    <loc xlink:type="locator" xlink:href="adc-20211231.xsd#adc_SecSchedule1228RealEstateCompaniesInvestmentInRealEstateAccumulatedDepreciationExcludingAssetsHeldForSale" xlink:label="adc_SecSchedule1228RealEstateCompaniesInvestmentInRealEstateAccumulatedDepreciationExcludingAssetsHeldForSale" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="adc_SecSchedule1228RealEstateCompaniesInvestmentInRealEstateAccumulatedDepreciationExcludingAssetsHeldForSale" xlink:to="adc_SecSchedule1228RealEstateCompaniesInvestmentInRealEstateAccumulatedDepreciationExcludingAssetsHeldForSale_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="adc_SecSchedule1228RealEstateCompaniesInvestmentInRealEstateAccumulatedDepreciationExcludingAssetsHeldForSale_lbl" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation, Excluding Assets Held-For-Sale</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="adc_SecSchedule1228RealEstateCompaniesInvestmentInRealEstateAccumulatedDepreciationExcludingAssetsHeldForSale_lbl" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation, Excluding Assets Held-For-Sale</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="adc_SecSchedule1228RealEstateCompaniesInvestmentInRealEstateAccumulatedDepreciationExcludingAssetsHeldForSale_lbl" xml:lang="en-US">Balance at December 31</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="adc_SecSchedule1228RealEstateCompaniesInvestmentInRealEstateAccumulatedDepreciationExcludingAssetsHeldForSale_lbl" xml:lang="en-US">Balance at January 1</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense" xlink:label="us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense" xlink:to="us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense_lbl" xml:lang="en-US">SEC Schedule III, Real Estate Accumulated Depreciation, Depreciation Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense_lbl" xml:lang="en-US">Current year depreciation expense</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RealEstateAccumulatedDepreciationRealEstateSold" xlink:label="us-gaap_RealEstateAccumulatedDepreciationRealEstateSold" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateAccumulatedDepreciationRealEstateSold" xlink:to="us-gaap_RealEstateAccumulatedDepreciationRealEstateSold_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateAccumulatedDepreciationRealEstateSold_lbl" xml:lang="en-US">SEC Schedule III, Real Estate Accumulated Depreciation, Real Estate Sold</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_RealEstateAccumulatedDepreciationRealEstateSold_lbl" xml:lang="en-US">Disposition of real estate</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TaxBasisOfInvestmentsCostForIncomeTaxPurposes" xlink:label="us-gaap_TaxBasisOfInvestmentsCostForIncomeTaxPurposes" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TaxBasisOfInvestmentsCostForIncomeTaxPurposes" xlink:to="us-gaap_TaxBasisOfInvestmentsCostForIncomeTaxPurposes_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TaxBasisOfInvestmentsCostForIncomeTaxPurposes_lbl" xml:lang="en-US">Tax Basis of Investments, Cost for Income Tax Purposes</label>
  </link:labelLink>
</link:linkbase>


