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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1W—H1W⋯O12i	0.830 (10)	2.01 (2)	2.771 (3)	153 (3)
O2W—H4W⋯O2ii	0.831 (10)	1.957 (17)	2.747 (3)	159 (3)
O1W—H2W⋯O9	0.830 (10)	2.05 (2)	2.763 (3)	143 (3)
O2W—H3W⋯O6	0.835 (10)	2.10 (3)	2.781 (3)	138 (3)

Symmetry codes: (i) ; (ii) .