InChI=1/C16H20N4/c1-10-4-2-3-5-12(10)8-11-6-7-14-13(9-11)15(17)20-16(18)19-14/h2-5,11H,6-9H2,1H3,(H4,17,18,19,20)/p+1/t11-/m1/s1/fC16H21N4/h19H,17-18H2/q+1 F9F7EB93E6A715D9