InChI=1/C15H28N4O2/c1-3-5-6-13(15(16)21)19-10-8-18(9-11-19)12-14(20)17-7-4-2/h4,13H,2-3,5-12H2,1H3,(H2,16,21)(H,17,20)/t13-/m1/s1/f/h17H,16H2 5A0B8243782D8C08