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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H2B⋯O2i	0.86	2.28	3.131 (5)	174
C3—H3⋯O1ii	0.98	2.48	3.232 (5)	133

Symmetry codes: (i) ; (ii) .