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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1B⋯O1i	0.89	2.24	3.002 (3)	143
N1—H1B⋯O4i	0.89	2.53	3.236 (3)	137
N1—H1A⋯O2ii	0.89	2.16	2.983 (3)	153
N1—H1C⋯O3	0.89	2.15	2.994 (3)	159

Symmetry codes: (i) ; (ii) .