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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O2W—H2A⋯O2	0.845 (10)	2.25 (3)	2.935 (3)	139 (3)
O2W—H2B⋯O4ii	0.845 (10)	2.012 (13)	2.844 (3)	167 (4)
O1W—H1A⋯O1i	0.845 (10)	1.896 (12)	2.732 (2)	170 (4)
O1W—H1B⋯O4ii	0.845 (10)	2.07 (2)	2.827 (3)	149 (3)

Symmetry codes: (i) ; (ii) .