You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(2-phenylethyl)-5-propan-2-yl-1-[2-(trifluoromethyl)phenyl]pyrazole-4-carboxylic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H21F3N2O2
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