You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 3-(9-phenylcarbazol-3-yl)-9-[5-(9-phenylcarbazol-3-yl)-2,3-dihydrothiophen-2-yl]carbazole into molecular formula.
user
C52H35N3S
assistant