InChI=1S/C17H15ClN2O5S.K/c1-11-4-2-3-5-13(11)17(21)20-9-8-15(19-25-26(22,23)24)14-7-6-12(18)10-16(14)20;/h2-7,10H,8-9H2,1H3,(H,22,23,24);/q;+1/p-1/b19-15+;