You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(3-fluorophenyl)-1-[3-[(5-methyl-2-pyridin-4-ylimidazol-1-yl)methyl]pyrrolidin-1-yl]ethanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H23FN4O
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