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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O2W—H2WA⋯O2Wi	0.85	2.15	2.920 (5)	151
O2W—H2WB⋯O2Wii	0.85	1.96	2.807 (5)	179
O1W—H1WA⋯O4iii	0.83	1.93	2.746 (5)	168
O1W—H1WB⋯O3iv	0.86	1.86	2.692 (5)	164

Symmetry codes: (i) ; (ii) ; (iii) ; (iv) .