InChI=1S/C13H15N3O2S/c1-18-8-2-3-10-9(4-8)11-12(19-10)13(17)16-7(5-14)6-15-11/h2-4,7,15H,5-6,14H2,1H3,(H,16,17)/t7-/m1/s1