You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 4-fluoro-N-methyl-N-[1-[3-[4-(trifluoromethoxy)phenyl]phenyl]piperidin-4-yl]-2-(trifluoromethyl)benzamide by IUPAC nomenclature, provide its molecular formula.
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C27H23F7N2O2
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