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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1A⋯O3i	0.90	2.13	2.889 (12)	142
N1—H1A⋯O1i	0.90	2.15	3.049 (7)	176
N1—H1A⋯O2ii	0.90	2.22	3.054 (8)	155
N1—H1A⋯O2iii	0.90	2.32	3.104 (11)	145
N1—H1B⋯O2iv	0.90	1.98	2.843 (6)	161
N1—H1B⋯O1	0.90	2.48	3.353 (14)	165
N1—H1B⋯O1v	0.90	2.52	3.256 (10)	139

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