InChI=1/C15H22N2O3S/c1-12(18)16-13-8-10-15(11-9-13)21(19,20)17-14-6-4-2-3-5-7-14/h8-11,14,17H,2-7H2,1H3,(H,16,18)/f/h16H 587F445EF5EE8840