Formula: C33H26O11 | Mol. Weight: 598.60 g/mol
IUPAC: 6-[(3,4-dihydroxy-2-methoxyphenyl)methyl]-5-(3,4-dihydroxyphenyl)-9,10-dihydroxy-1,3-dimethoxybenzo[a]xanthen-2-one
COC1=CC2=C(C(=C3C(=CC4=CC(=C(C=C4O3)O)O)C2=C(C1=O)OC)CC5=C(C(=C(C=C5)O)O)OC)C6=CC(=C(C=C6)O)O