Acta Cryst. (2001). E57, o13-o15 [ doi:10.1107/S1600536800017852 ]
Abstract: Half of the title compound (N,N'-diacetyl-1,4,7,13,16,19-hexaoxa-10,22-diazacyclotetracosane), C20H38N2O8, makes up the asymmetric unit. The crown ring is relatively flat, and though collapsed in on itself, would require little change to adopt a binding conformation. C-HO bonding is also observed.
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