InChI=1/C13H16N4O2/c1-18-10-4-8(5-11(6-10)19-2)3-9-7-16-13(15)17-12(9)14/h4-7H,3H2,1-2H3,(H4,14,15,16,17)/p+1/fC13H17N4O2/h16H,14-15H2/q+1 DC2248B735921982