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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1⋯O1i	0.86 (2)	2.159 (19)	2.8925 (17)	142.8 (17)
O2—H2⋯O1ii	0.82	1.78	2.5954 (17)	170

Symmetry codes: (i) ; (ii) .