You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-nitro-N-[1-oxo-1-[(6-pyrazol-1-ylpyridin-3-yl)amino]propan-2-yl]benzamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H16N6O4
assistant