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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1B⋯O4iii	0.91	2.21	3.018 (4)	147
N1—H1A⋯O2iv	0.88	2.17	2.943 (4)	146
N3—H3⋯O3v	0.95	1.88	2.822 (4)	174

Symmetry codes: (iii) ; (iv) ; (v) .