You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[4-[1-[(1-methylpyrazol-4-yl)methyl]piperidin-4-yl]pyridin-2-yl]pyrimidin-2-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H23N7
assistant