Crystal structure of diethyl 2,2′-[((1<i>E</i>,1′<i>E</i>)-{[(1<i>R</i>,4<i>R</i>)-cyclohexane-1,4-diyl]bis(azanylylidene)}bis(methanylylidene))bis(1<i>H</i>-pyrrole-2,1-diyl)]diacetate
Acta crystallographica. Section E, Crystallographic communications