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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1N⋯O2i	0.86 (2)	2.11 (2)	2.947 (2)	167 (2)
O2—H2O⋯O1ii	0.84 (2)	1.92 (2)	2.7630 (19)	176 (3)

Symmetry codes: (i) ; (ii) .