You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N,5-diphenyl-N-[2-[2-(N-(9-phenylcarbazol-2-yl)anilino)phenyl]phenyl]-[1]benzothiolo[2,3-g]carbazol-3-amine by IUPAC nomenclature, provide its molecular formula.
user
C66H44N4S
assistant