Try searching for...
SCFBio, IIT Delhi
Formula: C23H24O6 | Mol. Weight: 396.40 g/mol
IUPAC: 5,9,11-trihydroxy-3,3-dimethyl-10-(3-methylbut-2-enyl)-1,2-dihydropyrano[3,2-a]xanthen-12-one
CC(=CCC1=C(C2=C(C=C1O)OC3=C(C2=O)C4=C(C(=C3)O)OC(CC4)(C)C)O)C