You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 9-bromo-1,6-diphenylpyrrolo[3,2-c]carbazole;N-(9,9-dimethylfluoren-2-yl)-1,6-diphenyl-N-(4-pyridin-2-ylphenyl)pyrrolo[3,2-c]carbazol-9-amine;2-[4-[(9,9-dimethylfluoren-2-yl)methyl]phenyl]pyridine by IUPAC nomenclature, provide its molecular formula.
user
C105H78BrN7
assistant