InChI=1/C18H20N2O4S/c21-18(22)17-5-2-1-4-16(17)14-6-8-15(9-7-14)25(23,24)20-12-3-10-19-11-13-20/h1-2,4-9,19H,3,10-13H2,(H,21,22)/f/h19H FB1744E633DA05B9