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<!-- Generated by Broadridge Transform (tm) - http://www.broadridge.com -->
<!-- Created: Thu Jul 30 20:58:08 UTC 2026 -->
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cst_MidcapCompanyRiskMember_lbl" xml:lang="en-US">Mid-cap company risk [Member]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cst_NewAdviserRiskMember_lbl" xml:lang="en-US">New adviser risk [Member]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cst_QuantitativeStrategyRiskMember_lbl" xml:lang="en-US">Quantitative strategy risk [Member]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cst_SectorRiskMember_lbl" xml:lang="en-US">Sector risk [Member]</label>
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    <loc xlink:type="locator" xlink:label="cst_SecuritiesLendingRiskMember" xlink:href="cst-20251231.xsd#cst_SecuritiesLendingRiskMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cst_SecuritiesLendingRiskMember_lbl" xml:lang="en-US">Securities lending risk [Member]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cst_SmallcapCompanyRiskMember_lbl" xml:lang="en-US">Small-cap company risk [Member]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cst_ValueStockRiskMember_lbl" xml:lang="en-US">Value stock risk [Member]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EquitySecuritiesMember_lbl" xml:lang="en-US">Equity Securities [Member]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cst_index_SP_500_IndexMember_lbl" xml:lang="en-US">S&amp;P 500&#174; Index</label>
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