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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1A⋯O3i	0.89	1.90	2.779 (6)	168
N1—H1B⋯O2ii	0.89	1.89	2.779 (6)	177
N1—H1C⋯O1iii	0.89	1.93	2.797 (6)	165

Symmetry codes: (i) ; (ii) ; (iii) .