You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl (8S)-8-(bromomethyl)-2-methyl-4-(4-methylpiperidine-1-carbonyl)oxy-6-(5,6,7-trimethoxy-1H-indole-2-carbonyl)-7,8-dihydro-3H-pyrrolo[3,2-e]indole-1-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C33H37BrN4O8
assistant