Table 1. Hydrogen-bond geometry (, ).

Cg1 is the centroid of the C1C6 ring.

DHA	DH	HA	D A	DHA
N1H1O2i	0.86	2.12	2.962(5)	168
N2H2AO2ii	0.86	2.11	2.936(4)	162
C14H14B Cg1iii	0.96	2.62	3.570(6)	171

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