InChI=1S/C22H20O13/c23-7-2-1-5-11(7)20(30)34-17-12(5)8(4-9-13(17)6-3-10(24)33-21(6)31-9)32-22-16(27)14(25)15(26)18(35-22)19(28)29/h4,6,10,14-16,18,21-22,24-27H,1-3H2,(H,28,29)