You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
9-[9-[6-(2,4-diphenyl-1,2-dihydro-1,3,5-triazin-6-yl)dibenzofuran-3-yl]dibenzothiophen-4-yl]-1,2-dihydrocarbazole The above is the IUPAC name of a molecule. Write its molecular formula.
user
C51H34N4OS
assistant