InChI=1/C17H20N2O4S/c1-10-14(20)18-12-9-11(5-6-13(12)24-10)15(21)19-17(16(22)23-2)7-3-4-8-17/h5-6,9-10H,3-4,7-8H2,1-2H3,(H,18,20)(H,19,21)/t10-/m1/s1/f/h18-19H 56E83E6A272169ED