InChI=1/C13H20N4O/c1-2-5-17(6-7-18)9-13-15-11-4-3-10(14)8-12(11)16-13/h3-4,8,18H,2,5-7,9,14H2,1H3,(H,15,16)/f/h16H B78D3BCCEB97B2E4