InChI=1S/C22H22O11/c1-9-12(24)8-13(25)15(16(9)26)11(23)7-6-10-4-2-3-5-14(10)32-22-19(29)17(27)18(28)20(33-22)21(30)31/h2-8,17-20,22,24-29H,1H3,(H,30,31)/b7-6+