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For the molecule named N-butyl-N-[2-[2-(1H-indol-3-yl)ethyl-[[4-(trifluoromethyl)phenyl]methyl]amino]-2-oxoethyl]-4-(trifluoromethyl)benzamide by IUPAC nomenclature, provide its molecular formula.
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C32H31F6N3O2
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