Formula: C25H22O11 | Mol. Weight: 498.40 g/mol
IUPAC: (2R,3R)-8,10-dihydroxy-3-(4-hydroxy-3,5-dimethoxyphenyl)-2-(hydroxymethyl)-5-methoxy-2,3-dihydro-[1,4]dioxino[2,3-c]xanthen-7-one
COC1=CC(=CC(=C1O)OC)C2C(OC3=C4C(=CC(=C3O2)OC)C(=O)C5=C(C=C(C=C5O4)O)O)CO