You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named butane;1,1-dimethylcyclopropane;1,2-dimethylcyclopropane;2,2-dimethylpropane;ethane;ethylcyclopropane;hexane;2-methylbutane;methylcyclobutane;methylcyclopropane;2-methylpropane;pentane;propane by IUPAC nomenclature, provide its molecular formula.
user
C65H150
assistant