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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1—H1⋯N3	0.82	1.91	2.713 (4)	165
N4—H4⋯O1i	0.86	1.97	2.828 (4)	178
O2—H2⋯N2ii	0.82	1.93	2.743 (4)	170
N1—H1A⋯O2iii	0.86	1.93	2.751 (4)	160

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