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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1A⋯N4	0.86	2.19	3.035 (5)	168
N3—H3AA⋯N2	0.86	2.23	3.083 (5)	173
N1—H1C⋯O5i	0.86	2.03	2.877 (4)	167
N3—H3BA⋯O2ii	0.86	2.27	3.029 (4)	148

Symmetry codes: (i) ; (ii) .