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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1⋯O3i	0.86	2.28	2.998 (2)	141
C7—H7B⋯O3ii	0.97	2.55	3.503 (4)	168

Symmetry codes: (i) ; (ii) .