You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 3-methyl-2-[9-[3-(3-methyl-2H-benzimidazol-1-yl)phenyl]carbazol-2-yl]-9H-indeno[1,2-f]benzimidazole into its molecular formula.
user
C41H31N5
assistant