Table 2. Hydrogen-bond geometry (Å, °).

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1—H1A⋯N1	0.84	2.01	2.848 (7)	179
N4—H4A⋯N3i	0.88	2.10	2.972 (7)	172
N4—H4B⋯O1ii	0.88	2.14	2.841 (7)	137
N5—H5A⋯O1iii	0.88	2.16	3.014 (7)	163
N5—H5B⋯N2iv	0.88	2.14	2.987 (8)	161

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