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