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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1⋯O3i	0.86	2.06	2.915 (3)	174
N3—H3⋯O4ii	0.86	2.03	2.851 (3)	160

Symmetry codes: (i) ; (ii) .