InChI=1/C15H11N3O3S2/c1-9-4-5-11(21-9)7-12-14(20)18(15(22)23-12)17-13(19)10-3-2-6-16-8-10/h2-8H,1H3,(H,17,19)/b12-7+/f/h17H D1E65919B383636E