Try searching for...
SCFBio, IIT Delhi
Formula: C15H20O5 | Mol. Weight: 280.32 g/mol
IUPAC: (3R,3aR,6S,6aS,9aR,9bR)-3-hydroxy-9-(hydroxymethyl)-3,6-dimethyl-4,5,6,6a,9a,9b-hexahydro-3aH-azuleno[4,5-b]furan-2,7-dione
CC1CCC2C(C3C1C(=O)C=C3CO)OC(=O)C2(C)O