You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-diphenylphosphanyl-1-[2-(diphenylphosphanylamino)-3-triphenylsilyl-5,6,7,8-tetrahydronaphthalen-1-yl]-3-triphenylsilyl-5,6,7,8-tetrahydronaphthalen-2-amine is the IUPAC name of a molecule. Please give its molecular formula.
user
C80H70N2P2Si2
assistant