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For the molecule named 4-bromo-14-[2-(1H-indol-3-yl)ethyl]-11,11-dimethyl-8,14-diazatetracyclo[7.6.1.02,7.013,16]hexadeca-1(16),2(7),3,5,8,12-hexaen-15-one by IUPAC nomenclature, provide its molecular formula.
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C26H22BrN3O
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