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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O4—H4⋯O1	0.88	1.75	2.625 (3)	171
N1—H1⋯O2i	0.86	2.05	2.866 (3)	158

Symmetry code: (i) .