InChI=1/C18H26N6O/c1-5-13-6-7-15-14(8-13)12(2)21-17(22-15)23-16-19-10-24(11-20-16)18(3,4)9-25/h6-8,25H,5,9-11H2,1-4H3,(H2,19,20,21,22,23)/f/h19-20H D75331ED338935AD