InChI=1S/C17H17ClN2O6S/c1-11-9-12(18)3-8-15(11)26-10-16(21)19-13-4-6-14(7-5-13)27(23,24)20-17(22)25-2/h3-9H,10H2,1-2H3,(H,19,21)(H,20,22)