You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl (2S)-2-[4-[(6-bromo-4-oxo-2-propylquinazolin-3-yl)iminomethyl]-2-nitrophenoxy]propanoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H23BrN4O6
assistant