InChI=1S/C16H16ClNO3S/c1-21-16(20)15(11-4-2-3-5-12(11)17)18-7-6-13-10(9-18)8-14(19)22-13/h2-5,8,13,15H,6-7,9H2,1H3/t13?,15-/m0/s1