Try searching for...
SCFBio, IIT Delhi
Formula: C15H18O4 | Mol. Weight: 262.30 g/mol
IUPAC: 6-hydroxy-5a,9-dimethyl-3-methylidene-3a,4,5,6,7,9b-hexahydrobenzo[g][1]benzofuran-2,8-dione
CC1=C2C3C(CCC2(C(CC1=O)O)C)C(=C)C(=O)O3