InChI=1S/C18H25N3O4S/c1-21(2)16-10-5-8-14-13(16)7-6-11-17(14)26(24,25)20-12-4-3-9-15(19)18(22)23/h5-8,10-11,15,20H,3-4,9,12,19H2,1-2H3,(H,22,23)/t15-/m0/s1