InChI=1/C15H20N4O/c1-10(2)8-19(9-14(16)20)13-6-5-12-11(15(13)17)4-3-7-18-12/h3-7,10H,8-9,17H2,1-2H3,(H2,16,20)/f/h16H2 80D39997EC685768