You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule N-[(2-chlorophenyl)methyl]-6-[[methyl-[(1-methylpyrazol-4-yl)methyl]amino]methyl]-2-oxo-1H-pyridine-3-carboxamide ?
user
C20H22ClN5O2
assistant