Table 1. Hydrogen-bond geometry (Å, °).

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H2A⋯O13i	0.86	2.00	2.814 (7)	157
N3—H3A⋯O4ii	0.86	2.05	2.892 (6)	166
N5—H5A⋯O12iii	0.86	2.01	2.848 (6)	163
N6—H6B⋯O10iv	0.86	2.16	2.984 (6)	160
O13—H13B⋯O5	0.82	1.91	2.733 (7)	177

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