InChI=1/C15H12N6S/c1-21-12-7-3-2-6-11(12)13-14(21)17-15(20-18-13)19-16-9-10-5-4-8-22-10/h2-9H,1H3,(H,17,19,20)/b16-9-/f/h19H D3F8351948415E41