You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as [4-[3-[1-(9,9-diphenylfluoren-2-yl)carbazol-9-yl]carbazol-9-yl]phenyl]-triphenylsilane using the IUPAC nomenclature.
user
C73H50N2Si
assistant