You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
9-[3-[3-[4-carbazol-9-yl-6-(9H-fluoren-9-yl)-1,3,5-triazin-2-yl]phenyl]phenyl]carbazole The above is the IUPAC name of a molecule. Write its molecular formula.
user
C52H33N5
assistant