InChI=1S/C18H19N3O4S/c1-21(16-14(22)3-2-8-19-16)9-10-25-13-6-4-12(5-7-13)11-15-17(23)20-18(24)26-15/h2-8,15,22H,9-11H2,1H3,(H,20,23,24)