Table 1. Hydrogen-bond geometry (, ).

DHA	DH	HA	D A	DHA
N7H7AO9	0.95(4)	2.28(4)	2.813(4)	114(3)
N7H7AO14	0.95(4)	1.76(4)	2.678(3)	160(3)
N8H8AO1	0.94(4)	2.35(4)	2.894(4)	117(3)
N8H8AO7	0.94(4)	1.76(4)	2.660(3)	158(4)
C5H5O2i	0.93	2.50	3.423(4)	170
C9H9O8ii	0.93	2.45	3.365(3)	167
C14H14O10iii	0.93	2.54	3.456(4)	167
C17H17O3	0.93	2.34	3.078(4)	136
C18H18BO12i	0.96	2.64	3.488(5)	148
C20H20O13iv	0.93	2.55	3.247(4)	132
C23H23O8ii	0.93	2.63	3.394(4)	140
C23H23O11	0.93	2.36	3.122(4)	139

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