You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 3,3-dimethylbutylcycloheptane;5,5-dimethylhexylcycloheptane;5,5-dimethylhexylcyclohexane;4,4-dimethylpentylcycloheptane;2,2-dimethylpropylcycloheptane is given. What is its corresponding molecular formula?
user
C68H136
assistant