InChI=1/C12H18N4O2/c1-9(2)8-13-10(3)14-15-11-4-6-12(7-5-11)16(17)18/h4-7,9,15H,8H2,1-3H3,(H,13,14)/p+1/fC12H19N4O2/h13-14H/q+1 B843CB1B9815B195