InChI=1/C18H21N3O4S/c22-21(23)17-8-4-5-9-18(17)26(24,25)19-16-10-12-20(13-11-16)14-15-6-2-1-3-7-15/h1-9,16,19H,10-14H2/p+1/fC18H22N3O4S/h20H/q+1 1944BB9A073F451D