InChI=1S/C22H20O13/c1-32-12-3-2-7(4-8(12)23)13-6-10(25)14-9(24)5-11(26)18(19(14)33-13)34-22-17(29)15(27)16(28)20(35-22)21(30)31/h2-6,15-17,20,22-24,26-29H,1H3,(H,30,31)