InChI=1/C16H19NO4S/c1-11(18)22-14-8-4-5-12(9-14)16(21)17(10-15(19)20)13-6-2-3-7-13/h4-5,8-9,13H,2-3,6-7,10H2,1H3,(H,19,20)/p-1/fC16H18NO4S/q-1 6A6CE5A5275F3EA6