You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
11,12-bis(1-methylbenzimidazol-2-yl)-3,8-diphenylindolo[2,3-a]carbazole;12-dibenzofuran-2-yl-3,8,11-triphenylindolo[2,3-a]carbazole;11,12-di(dibenzofuran-2-yl)-3,8-diphenylindolo[2,3-a]carbazole;12-(1-methylbenzimidazol-2-yl)-3,8,11-triphenylindolo[2,3-a]carbazole The above is the IUPAC name of a molecule. Write its molecular formula.
user
C192H124N14O3
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