There are three main conformers to consider, all have C s symmetry; the lowest has a CCON trans configuration with CONH dihedrals of ±124.9 • while the two have a CCON cis arrangement with ∠CONH = ±124.9 • and lies very close in energy ≈ 0.1 kJ mol -1 or with ±56.4 • at +6.1 kJ mol -1 -there is almost nothing known about this compound.