InChI=1/C13H12N6O/c1-9(10-4-2-3-5-11(10)20)15-16-12-6-7-13-17-14-8-19(13)18-12/h2-8,20H,1H3,(H,16,18)/b15-9+/f/h16H 095A0BA11908A918