1 QED N,N'-{[(2-{[(2,3-dihydroxyphenyl)carbonyl]amino}ethyl)imino]diethane-2,1-diyl}bis(1-hydroxy-6-oxo-1,6-dihydropyridine-2 -carboxamide) 1.000 2 TC2 N-{2-[bis(2-{[(2,3-dihydroxyphenyl)carbonyl]amino}ethyl)amino]ethyl}-1-hydroxy-6-oxo-1,6-dihydropyridine-2-carboxamide 0.905