You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[5-chloro-2-[(1S)-1-[(2,6-diamino-5-cyanopyrimidin-4-yl)amino]ethyl]-4-oxo-6,7-dihydroquinazolin-3-yl]-2-methylbenzamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H22ClN9O2
assistant