InChI=1S/C22H20O12/c1-6-3-8-12(16(26)13(6)23)15(25)11-9(14(8)24)4-7(32-2)5-10(11)33-22-19(29)17(27)18(28)20(34-22)21(30)31/h3-5,17-20,22-23,26-29H,1-2H3,(H,30,31)