InChI=1S/C22H24O11/c1-30-14-9-10(4-7-12(14)23)3-5-11-6-8-13(24)19(31-2)18(11)32-22-17(27)15(25)16(26)20(33-22)21(28)29/h3-9,15-17,20,22-27H,1-2H3,(H,28,29)/b5-3+