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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O3—H3⋯O4i	0.82	1.80	2.617 (4)	171
O2—H2⋯O1ii	0.82	1.86	2.681 (4)	176

Symmetry codes: (i) ; (ii) .