You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(2-methyl-4-phenylphenyl)-3-pyrrolidin-3-ylimidazo[4,5-b]pyridin-2-one;hydrochloride The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H23ClN4O
assistant