You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 7-(4-phenylphenyl)-4-[4-phenyl-6-(4-phenylphenyl)-1,3,5-triazin-2-yl]-[1]benzofuro[2,3-b]carbazole ?
user
C51H32N4O
assistant