C=C1C[C@]2(O)OC(=O)C(C)=C2C[C@@H]2C(=C)CC[C@H]12	(3aS,5aS,8aS)-3a-hydroxy-1-methyl-5,8-dimethylidene-4,5a,6,7,8a,9-hexahydroazuleno[6,5-b]furan-2-one