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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H2⋯O4i	0.86	2.16	3.000 (2)	166
C2—H2B⋯O2ii	0.96	2.57	3.498 (3)	161

Symmetry codes: (i) ; (ii) .