InChI=1/C13H18N4O/c14-10-13(5-3-1-2-4-6-13)12(18)15-7-11-8-16-17-9-11/h8-9H,1-7H2,(H,15,18)(H,16,17)/f/h15-16H 1E4524FD8DD5E1D3