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