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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H2B⋯O2i	0.90	2.34	3.013 (3)	131
N2—H2B⋯O1i	0.90	1.97	2.764 (2)	146
N2—H2A⋯O3	0.90	2.56	3.242 (3)	132
N2—H2A⋯O3ii	0.90	2.13	2.916 (3)	145

Symmetry codes: (i) ; (ii) .