You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [1-(4-bromobenzoyl)piperidin-4-yl]-[4-(2,2,2-trifluoroethyl)-1,4-diazepan-1-yl]methanone into its molecular formula.
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C20H25BrF3N3O2
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