IUPAC: (3S,3aS,9aS,9bS)-3,6,9-trimethyl-2H,3H,3aH,4H,5H,7H,9aH,9bH-azuleno[4,5-b]furan-2,7-dione

SMILES: C[C@H]1[C@@H]2CCC(C)=C3[C@@H]([C@H]2OC1=O)C(C)=CC3=O |c:6,16|