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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1W—H1W⋯N1	0.85 (1)	2.02 (1)	2.8530 (15)	171 (2)
O1W—H2W⋯O2Wi	0.84 (1)	1.94 (1)	2.7723 (14)	173 (2)
O2W—H3W⋯N2	0.85 (2)	2.01 (2)	2.8429 (14)	165 (1)
O2W—H4W⋯O1Wii	0.85 (1)	1.94 (2)	2.7683 (14)	166 (2)

Symmetry codes: (i) ; (ii) .