You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-methoxy-6-(3-methylbutan-2-yl)naphthalene;[5-methoxy-2-methyl-3-(2-methylpropyl)indol-1-yl]-(4-methylphenyl)methanone;2-methoxy-6-(2-methylpropyl)naphthalene;1-(3-methylbutan-2-yl)-4-(2-methylpropyl)benzene by IUPAC nomenclature, provide its molecular formula.
user
C68H87NO4
assistant