You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance [4-[(E)-3-(5-amino-1-methyl-1,2-dihydrobenzo[e]indol-3-yl)-3-oxoprop-1-enyl]phenyl]methyl-dimethyl-[(1-methyl-5-nitropyrrol-2-yl)methyl]azanium;bromide .
user
C31H34BrN5O3
assistant