You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 3-N-(3-tert-butylphenyl)-1-N,2-diphenyl-3-N-[4-(3-phenylphenyl)phenyl]-1-N-(9,9'-spirobi[fluorene]-3-yl)-5-trimethylsilylbenzene-1,3-diamine into its molecular formula.
user
C74H62N2Si
assistant