InChI=1S/C22H24N2O7S/c1-12-5-8-18(13(2)9-12)32(28,29)11-15-19(21(26)31-4)20(24-22(27)23-15)14-6-7-16(25)17(10-14)30-3/h5-10,20,25H,11H2,1-4H3,(H2,23,24,27)