You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named (3S)-1-[[3,5-bis(trifluoromethyl)phenyl]methyl]-N-methyl-5-oxo-N-propan-2-ylpyrrolidine-3-carboxamide is given. What is its corresponding molecular formula?
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C18H20F6N2O2
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