IUPAC: 5,5',7,7'-tetrahydroxy-2,2'-bis(4-hydroxyphenyl)-4H,4'H-[6,8'-bichromene]-4,4'-dione

SMILES: Oc1ccc(cc1)-c1cc(=O)c2c(O)c(c(O)cc2o1)-c1c(O)cc(O)c2c1oc(cc2=O)-c1ccc(O)cc1