Table 2. Hydrogen-bond geometry (Å, °).

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O5—H1⋯O3ii	0.85 (8)	2.38 (8)	3.050 (7)	136 (7)
O5—H2⋯O4iii	0.85 (7)	1.98 (8)	2.765 (6)	153 (7)

Symmetry codes: (ii) ; (iii) .