Try searching for...
SCFBio, IIT Delhi
Formula: C15H20O5 | Mol. Weight: 280.32 g/mol
IUPAC: (2E)-2-[(1S,2S,4R,6S,7S)-7-hydroxy-1,5,5-trimethyl-9-oxo-10-oxatricyclo[4.4.0.02,4]decan-8-ylidene]propanoic acid
CC(=C1C(C2C(C3CC3C2(OC1=O)C)(C)C)O)C(=O)O