You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[2-[(6-bromo-2-ethyl-4-oxoquinazolin-3-yl)iminomethyl]-4-chloro-6-methoxyphenoxy]-N-(2-methylphenyl)acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H24BrClN4O4
assistant