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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1—H1⋯O2i	0.88 (3)	1.77 (3)	2.642 (3)	176 (3)
O3—H3⋯O2	0.92 (3)	1.78 (3)	2.617 (3)	152 (3)

Symmetry code: (i) .