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 3,6-ditert-butyl-1-[4-[3-tert-butyl-5-(4-phenylpyridin-2-yl)phenyl]-1-methylbenzimidazol-2-yl]-9H-carbazole .
user
C49H50N4
assistant