You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [2-oxo-2-[[2-(trifluoromethoxy)phenyl]methylamino]ethyl] 3-(2-oxopyrrolidin-1-yl)benzoate into its molecular formula.
user
C21H19F3N2O5
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