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-[9-[3-(3,5-dipyridin-2-ylphenyl)phenyl]carbazol-2-yl]-5-phenylpyrido[3,2-b]indole .
user
C51H33N5
assistant