InChI=1/C16H21N5/c1-20-9-11-21(12-10-20)16-17-8-7-15(19-16)18-13-14-5-3-2-4-6-14/h2-8H,9-13H2,1H3,(H,17,18,19)/p+1/fC16H22N5/h18,20H/q+1 BDE3CA64C7889FE8