InChI=1S/C20H21ClN2O3S/c1-20(24)10-8-17(9-11-20)23-27(25,26)18-5-2-14(3-6-18)19-7-4-16(21)12-15(19)13-22/h2-7,12,17,23-24H,8-11H2,1H3/t17-,20+