InChI=1/C14H20N4O/c1-2-6-16-14(19)12-17-8-10-18(11-9-17)13-5-3-4-7-15-13/h2-5,7H,1,6,8-12H2,(H,16,19)/f/h16H 1F65AAC8762A2A1E