InChI=1/C13H16N4O2/c1-11-14-6-9-16(11)7-3-5-15-13(18)12-4-2-8-17(19)10-12/h2,4,6,8-10H,3,5,7H2,1H3,(H,15,18)/f/h15H DB6E4438F4EA0F7C