You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 2-[4-(4,6-diphenyl-1,3,5-triazin-2-yl)-2-phenylphenyl]-9-phenyl-5-(2,4,6-triphenylphenyl)benzimidazolo[1,2-a]benzimidazole .
user
C70H46N6
assistant