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