Try searching for...
SCFBio, IIT Delhi
Formula: C23H22O7 | Mol. Weight: 410.40 g/mol
IUPAC: 4,7,8,9-tetrahydroxy-6-(3-methylbut-2-enyl)-2-prop-1-en-2-yl-2,3-dihydrofuro[3,2-b]xanthen-5-one
CC(=CCC1=C2C(=C(C(=C1O)O)O)OC3=CC4=C(CC(O4)C(=C)C)C(=C3C2=O)O)C