Try searching for...
SCFBio, IIT Delhi
Formula: C15H18O4 | Mol. Weight: 262.30 g/mol
IUPAC: (1S,2S,4R,7E,11S)-4,8-dimethyl-12-methylidene-3,14-dioxatricyclo[9.3.0.02,4]tetradec-7-ene-9,13-dione
CC1=CCCC2(C(O2)C3C(CC1=O)C(=C)C(=O)O3)C