You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(1E,3E,5E,7E,9E,11E,13E,15E,17E)-18-[(1S)-2,2-dimethyl-6-methylidenecyclohexyl]-3,7,12,16-tetramethyloctadeca-1,3,5,7,9,11,13,15,17-nonaenyl]-1,3,3-trimethylcyclohexene The above is the IUPAC name of a molecule. Write its molecular formula.
user
C40H56
assistant