Table 1. Hydrogen-bond geometry (, ).

DHA	DH	HA	D A	DHA
O1WH1WO8i	0.80(3)	2.06(3)	2.7995(19)	154(3)
O1WH2WO4ii	0.75(3)	2.17(3)	2.8913(18)	163(3)
O5H5O2iii	0.82	1.85	2.655(2)	167

Symmetry codes: (i) ; (ii) ; (iii) .