InChI=1/C13H16N4O/c1-11-14-8-10-17(11)9-4-7-16-13(18)12-5-2-3-6-15-12/h2-3,5-6,8,10H,4,7,9H2,1H3,(H,16,18)/f/h16H 5C55E88BAD3BAF5C