InChI=1/C13H16N4O/c1-9-3-2-4-10-11(9)16-12(15-10)13(18)17-7-5-14-6-8-17/h2-4,14H,5-8H2,1H3,(H,15,16)/p+1/fC13H17N4O/h14-15H/q+1 0EC54EB4BB1C03F9