You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 1-(9H-carbazol-3-yl)-9-phenylcarbazole;1-fluoro-2-isocyanobenzene;1-[9-(2-isocyanophenyl)carbazol-3-yl]-9-phenylcarbazole by IUPAC nomenclature, provide its molecular formula.
user
C74H47FN6
assistant