InChI=1S/C19H20ClNO6S/c20-14-1-3-15(4-2-14)27-16-5-7-17(8-6-16)28(24,25)19(13-18(22)21-23)9-11-26-12-10-19/h1-8,23H,9-13H2,(H,21,22)