Try searching for...
SCFBio, IIT Delhi
Formula: C21H22O8 | Mol. Weight: 402.40 g/mol
IUPAC: (10R)-1,8-dihydroxy-3-methyl-10-[(2S,3R,4R,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]-10H-anthracen-9-one
CC1=CC2=C(C(=C1)O)C(=O)C3=C(C2C4C(C(C(C(O4)CO)O)O)O)C=CC=C3O