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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1B⋯O3	0.93 (3)	1.82 (3)	2.729 (3)	164 (3)
N1—H1A⋯O5i	0.88 (3)	2.63 (2)	3.180 (3)	121.1 (19)
N1—H1A⋯O4i	0.88 (3)	1.99 (3)	2.856 (3)	169 (2)

Symmetry code: (i) .