Try searching for...
SCFBio, IIT Delhi
Formula: C25H28O6 | Mol. Weight: 424.50 g/mol
IUPAC: 1,5-dihydroxy-3,6-dimethoxy-4,8-bis(3-methylbut-2-enyl)xanthen-9-one
CC(=CCC1=CC(=C(C2=C1C(=O)C3=C(O2)C(=C(C=C3O)OC)CC=C(C)C)O)OC)C