You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(3-hydroxy-5,5,8,8-tetramethyl-4-naphthalen-1-yl-6,7-dihydronaphthalen-2-yl)ethanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H28O2
assistant