Try searching for...
SCFBio, IIT Delhi
Formula: C15H20O3 | Mol. Weight: 248.32 g/mol
IUPAC: (1R,2S,6R,8R,11S)-6-methyl-5-methylidene-11-propan-2-yl-9-oxatricyclo[6.2.1.02,6]undecane-7,10-dione
CC(C)C1C2C3CCC(=C)C3(C(=O)C1OC2=O)C