InChI=1/C15H15N3O2S/c16-21(19,20)13-8-6-12(7-9-13)17-18-15-10-5-11-3-1-2-4-14(11)15/h1-4,6-9,17H,5,10H2,(H2,16,19,20)/b18-15+/f/h16H2 F21DB4D713665C8D