You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
9-[2-[4-dibenzofuran-3-yl-6-(8-phenyldibenzofuran-3-yl)-1,3,5-triazin-2-yl]phenyl]carbazole is the IUPAC name of a molecule. Please give its molecular formula.
user
C51H30N4O2
assistant