You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
9-[4-tert-butyl-6-[3-(3,6-diphenyl-9H-carbazol-1-yl)phenyl]pyridin-2-yl]pyrido[2,3-b]indole The above is the IUPAC name of a molecule. Write its molecular formula.
user
C50H38N4
assistant