InChI=1/C15H20N2O5S/c1-3-8-22-12-4-6-13(7-5-12)23(20,21)17-10-11(2)9-14(17)15(18)16-19/h4-7,14,19H,2-3,8-10H2,1H3,(H,16,18)/t14-/m1/s1/f/h16H 6E5395E8A8AE1E01