You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[(1S)-1-[(2-amino-5-isocyano-6-methylpyrimidin-4-yl)amino]ethyl]-7-fluoro-3-phenylquinolizin-4-one into its molecular formula.
user
C23H19FN6O
assistant