Try searching for...
SCFBio, IIT Delhi
Formula: C15H20O3 | Mol. Weight: 248.32 g/mol
IUPAC: (3aR,8aS)-7-methyl-3-methylidene-6-(3-oxobutyl)-4,7,8,8a-tetrahydro-3aH-cyclohepta[b]furan-2-one
CC1CC2C(CC=C1CCC(=O)C)C(=C)C(=O)O2