InChI=1/C18H24N4O2/c23-17(20-13-6-2-1-3-7-13)18-21-16(22-24-18)10-12-11-19-15-9-5-4-8-14(12)15/h4-5,8-9,13,16,18,21-22H,1-3,6-7,10-11H2,(H,20,23)/p+1/t16-,18-/m0/s1/fC18H25N4O2/h19-20H/q+1 CEE0F1F9492A2E33