InChI=1S/C22H22O12/c1-31-14-5-9(32-22-19(28)17(26)18(27)20(34-22)21(29)30)6-15-16(14)12(25)7-13(33-15)8-2-3-10(23)11(24)4-8/h2-6,13,17-20,22-24,26-28H,7H2,1H3,(H,29,30)