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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1A⋯O1i	0.89	2.38	3.138 (3)	143
N1—H1A⋯O2i	0.89	2.13	2.975 (2)	158
N1—H1B⋯O1ii	0.89	1.97	2.848 (2)	171
N1—H1C⋯O2iii	0.89	1.95	2.825 (2)	169

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