You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule 2-(7-naphthalen-2-yldibenzofuran-3-yl)-9-[4-phenyl-6-(4-phenylphenyl)-1,3,5-triazin-2-yl]carbazole ?
user
C55H34N4O
assistant