InChI=1S/C22H20O12/c1-7-5-10(24)19(33-22-16(29)13(26)15(28)20(34-22)21(30)31)11-12(25)14(27)18(32-17(7)11)8-3-2-4-9(23)6-8/h2-6,13,15-16,20,22-24,26-29H,1H3,(H,30,31)