InChI=1/C16H22N4O/c1-4-20(5-2)11-13-6-8-14(9-7-13)18-16-17-12(3)10-15(21)19-16/h6-10H,4-5,11H2,1-3H3,(H2,17,18,19,21)/p+1/fC16H23N4O/h18-20H/q+1 92AEEFF7C341D156