Try searching for...
SCFBio, IIT Delhi
Formula: C16H10O6 | Mol. Weight: 298.25 g/mol
IUPAC: methyl 1,3-dihydroxy-9,10-dioxoanthracene-2-carboxylate
COC(=O)C1=C(C=C2C(=C1O)C(=O)C3=CC=CC=C3C2=O)O