InChI=1/C18H16N6O2/c1-2-26-16-9-12(7-8-15(16)25)10-19-21-17-13-5-3-4-6-14(13)18-22-20-11-24(18)23-17/h3-11,25H,2H2,1H3,(H,21,23)/b19-10+/f/h21H BC4649CFDC449AA9