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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1N⋯O1i	0.88	2.03	2.902 (2)	169
C4—H4B⋯O2ii	0.98	2.43	3.319 (2)	151

Symmetry codes: (i) ; (ii) .