InChI=1/C15H28N4O2/c1-2-18-9-11-19(12-10-18)14(20)15(13(16)17-21)7-5-3-4-6-8-15/h21H,2-12H2,1H3,(H2,16,17)/f/h16H2/b17-13- 67D621F5F4F54B99