Try searching for...
SCFBio, IIT Delhi
Formula: C16H12O13S2 | Mol. Weight: 476.40 g/mol
IUPAC: [4-(5,7-dihydroxy-6-methoxy-4-oxochromen-2-yl)-2-sulfooxyphenyl] hydrogen sulfate
COC1=C(C2=C(C=C1O)OC(=CC2=O)C3=CC(=C(C=C3)OS(=O)(=O)O)OS(=O)(=O)O)O