You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-[4-[[5-(3-benzyl-4-oxo-1,2-dihydroquinazolin-2-yl)-2-methoxycyclohexa-2,4-dien-1-yl]methoxy]phenyl]acetamide into molecular formula.
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C31H31N3O4
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