InChI=1S/C22H22N2O9S/c1-22(34(31)32,12-33-18(28)9-13-5-6-16(26)17(27)8-13)19(21(29)30)23-20-14(11-25)10-15-4-2-3-7-24(15)20/h2-8,10-11,19,23,26-27H,9,12H2,1H3,(H,29,30)(H,31,32)/t19-,22-/m0/s1