You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 1-methyl-N-[[4-[(4-methylpiperidin-1-yl)methyl]phenyl]methyl]-3,4-dihydro-1H-pyrrolo[1,2-a]pyrazine-2-carboxamide into molecular formula.
user
C23H32N4O
assistant