InChI=1S/C22H22O11/c1-9-13(24)8-14(25)15(16(9)26)12(23)6-5-10-3-2-4-11(7-10)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)/b6-5+