You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1,3-bis[2,6-bis[(1R)-1-(3,5-ditert-butylphenyl)ethyl]-6-methylcyclohexa-2,4-dien-1-yl]imidazolidine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C81H120N2
assistant