InChI=1S/C20H19ClN2O5S/c1-12-6-8-13(9-7-12)18-17(19(24)28-2)16(22-20(25)23-18)11-29(26,27)15-5-3-4-14(21)10-15/h3-10,18H,11H2,1-2H3,(H2,22,23,25)