InChI=1S/C22H24O10/c1-30-13-8-15(26)18(14(25)7-4-11-2-5-12(24)6-3-11)16(9-13)31-22-21(29)20(28)19(27)17(10-23)32-22/h2-9,17,19-24,26-29H,10H2,1H3/b7-4+