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 N-(7,7-dimethylbenzo[g]fluoren-9-yl)-5,5-diphenyl-N-(4-phenylphenyl)benzo[b][1]benzosilol-4-amine .
user
C55H41NSi
assistant