InChI=1S/C18H18ClNO4S/c1-11(21)24-16-9-12-10-20(8-7-15(12)25-16)17(18(22)23-2)13-5-3-4-6-14(13)19/h3-6,9,17H,7-8,10H2,1-2H3/t17-/m0/s1