InChI=1S/C22H20O11/c1-7-3-9-13(11(23)4-7)16(25)14-10(15(9)24)5-8(31-2)6-12(14)32-22-19(28)17(26)18(27)20(33-22)21(29)30/h3-6,17-20,22-23,26-28H,1-2H3,(H,29,30)