Try searching for...
SCFBio, IIT Delhi
Formula: C19H20O4 | Mol. Weight: 312.40 g/mol
IUPAC: (5R)-5,15,15-trimethyl-3,8-dioxatetracyclo[8.8.0.02,6.011,16]octadeca-1(10),2(6),11(16),17-tetraene-7,9-dione
CC1COC2=C1C(=O)OC(=O)C3=C2C=CC4=C3CCCC4(C)C