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