InChI=1/C18H17N2O5S/c1-3-4-13-25-14-9-11-15(12-10-14)26(23,24)20(2)17-8-6-5-7-16(17)18(21)19-22/h5-12H,13H2,1-2H3,(H-,19,21,22)/q-1/f/h19H 29DE31E6DBFC54AF