You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(5-bromo-1H-indol-3-yl)-1H-phenanthro[9,10-d]imidazole;5-bromo-3-[4-phenyl-5-(4-phenylphenyl)-1H-imidazol-2-yl]-1H-indole;2-(1H-indol-3-yl)-1H-phenanthro[9,10-d]imidazole;2-(1-methylindol-3-yl)-1H-phenanthro[9,10-d]imidazole;2-(2-methyl-1H-indol-3-yl)-1H-phenanthro[9,10-d]imidazole is the IUPAC name of a molecule. Please give its molecular formula.
user
C123H83Br2N15
assistant