You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
9-[7-(4,6-diphenyl-1,3,5-triazin-2-yl)dibenzothiophen-2-yl]-3-phenyl-6-[3-[4-phenyl-6-[8-(2-phenylcarbazol-9-yl)dibenzothiophen-3-yl]-1,3,5-triazin-2-yl]phenyl]carbazole is the IUPAC name of a molecule. Please give its molecular formula.
user
C90H54N8S2
assistant