InChI=1/C16H20N4/c17-9-13-8-12-2-1-3-14(12)18-16(13)19-15-10-20-6-4-11(15)5-7-20/h8,11,15H,1-7,10H2,(H,18,19)/p+1/t15-/m0/s1/fC16H21N4/h19-20H/q+1 C1222D04B88E373A