You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
7-(9-naphthalen-1-ylcarbazol-3-yl)-12-(3-phenylphenyl)-[1]benzothiolo[3,2-a]carbazole The above is the IUPAC name of a molecule. Write its molecular formula.
user
C52H32N2S
assistant