IUPAC: (1R,2R,6S)-1,9-dimethyl-5-methylidene-3,14-dioxatricyclo[8.4.0.0^{2,6}]tetradec-9-ene-4,13-dione

SMILES: CC1=C2CCC(=O)O[C@@]2(C)[C@@H]2OC(=O)C(=C)[C@@H]2CC1 |c:1|