You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 3-[[4-[5-(difluoromethyl)-1,3,4-oxadiazol-2-yl]-2-fluorophenyl]methyl]-5-fluoro-1-(1-methylpiperidin-4-yl)benzimidazol-2-one by IUPAC nomenclature, provide its molecular formula.
user
C23H21F4N5O2
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