Try searching for...
SCFBio, IIT Delhi
Formula: C15H20O | Mol. Weight: 216.32 g/mol
IUPAC: (4aS,8aR)-3,8a-dimethyl-5-methylidene-4,4a,6,7,8,9-hexahydrobenzo[f][1]benzofuran
CC1=COC2=C1CC3C(=C)CCCC3(C2)C