IUPAC: 3-{2-[(1R,4aS,5R,6R,8aR)-6-hydroxy-5-(hydroxymethyl)-5,8a-dimethyl-2-methylidene-decahydronaphthalen-1-yl]-2-oxoethyl}-2,5-dihydrofuran-2-one

SMILES: C[C@@]1(CO)[C@H](O)CC[C@]2(C)[C@@H]1CCC(=C)[C@H]2C(=O)CC1=CCOC1=O |t:21|