You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 7-(4,6-diphenyl-1,3,5-triazin-2-yl)-8-naphtho[2,1-b][1]benzofuran-9-ylbenzo[c]carbazole .
user
C47H28N4O
assistant