InChI=1/C15H18N4O/c20-15-8-7-14(18-11-4-9-16-10-12-18)17-19(15)13-5-2-1-3-6-13/h1-3,5-8,16H,4,9-12H2/p+1/fC15H19N4O/h16H/q+1 6F989196E55B1C21