You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-[2-amino-4-[amino(dimethylidene)-lambda6-sulfanyl]-3-methyl-2H-azepin-6-yl]-3-(4-bromophenyl)-2-(methylamino)quinazolin-4-one;benzene is the IUPAC name of a molecule. Please give its molecular formula.
user
C30H31BrN6OS
assistant