You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (4-pyridin-2-ylpiperazin-1-yl)-[1-(4-pyrrolidin-1-ylpyrimidin-5-yl)piperidin-4-yl]methanone into molecular formula.
user
C23H31N7O
assistant