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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1⋯O3i	0.87 (2)	1.98 (2)	2.838 (2)	170.1 (19)
O1—H2⋯O2	0.98 (2)	1.49 (2)	2.4632 (18)	173 (2)

Symmetry code: (i) .