InChI=1/C15H28N4O2/c1-3-15(5-7-16-8-6-15)13(20)18-9-11-19(12-10-18)14(21)17-4-2/h16H,3-12H2,1-2H3,(H,17,21)/p+1/fC15H29N4O2/h16-17H/q+1 DA355635B7CD5379