You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
The IUPAC name of a certain molecule is (1R,6R,7S,8Z)-8-ethylidene-1,3,4,7-tetramethylbicyclo[4.2.1]non-3-en-9-one . Can you provide its SMILES representation?
user
CC=C1C(C)C2CC(C)=C(C)CC1(C)C2=O
assistant