You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(1H-benzimidazol-2-yl)-N-[2-oxo-1-(2,2,2-trifluoroethyl)pyridin-3-yl]piperidine-1-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H20F3N5O2
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