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 9-[2-(4,6-diphenyl-1,3,5-triazin-2-yl)-4-pyridin-2-ylphenyl]carbazole-2,7-dicarbonitrile .
user
C40H23N7
assistant