You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[1-[2-(4-naphthalen-1-yl-2-propyl-1H-inden-1-yl)propan-2-yl]-2-propyl-1H-inden-4-yl]naphthalene is the IUPAC name of a molecule. Please give its molecular formula.
user
C47H44
assistant