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For the molecule named 16-[(E)-3-(4-chlorophenyl)-3-oxoprop-1-enyl]-6,8,18-triazatetracyclo[9.7.0.02,7.012,17]octadeca-1(11),2(7),3,5,12,14,16-heptaen-9-one by IUPAC nomenclature, provide its molecular formula.
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C24H16ClN3O2
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