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