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 8-carbazol-9-yl-2-(3-ethenyl-2-prop-1-enylindol-1-yl)-5-(4-methylphenyl)-10,10-diphenylbenzo[b][1,4]benzazasiline .
user
C56H43N3Si
assistant