InChI=1/C16H19N5/c1-3-20-6-8-21(9-7-20)16-13-10-12(2)4-5-14(13)18-19-15(16)11-17/h4-5,10H,3,6-9H2,1-2H3/p+1/fC16H20N5/h20H/q+1 BCEB8222BD6FBFF6