You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[5-bromo-2-ethoxy-4-[[2-(4-methoxy-2-methyl-5-propan-2-ylphenyl)-4-oxoquinazolin-3-yl]iminomethyl]phenoxy]acetic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C30H30BrN3O6
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