You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-[3-[(5-methyl-2-phenylimidazol-1-yl)methyl]pyrrolidin-1-yl]-2-pyridin-4-ylethanone into its molecular formula.
user
C22H24N4O
assistant