InChI=1S/C22H22O11/c23-9-11-13(25)8-14(26)15(12(24)7-6-10-4-2-1-3-5-10)19(11)32-22-18(29)16(27)17(28)20(33-22)21(30)31/h1-8,16-18,20,22-23,25-29H,9H2,(H,30,31)/b7-6+