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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1W—H11W⋯O4i	0.85 (2)	1.84 (3)	2.686 (3)	172 (3)
O1W—H12W⋯O3ii	0.85 (2)	1.94 (3)	2.769 (3)	163 (3)
O2W—H21W⋯O3iii	0.90 (2)	1.91 (2)	2.775 (3)	161 (3)
O2W—H21W⋯O4iii	0.90 (2)	2.37 (3)	2.909 (3)	118 (2)
O2W—H22W⋯O4Wiv	0.89 (2)	1.89 (3)	2.770 (3)	176 (3)
O3W—H31W⋯O2v	0.88 (2)	2.12 (4)	2.979 (3)	167 (4)
O3W—H32W⋯O1	0.88 (2)	2.03 (4)	2.861 (3)	157 (4)
O4W—H4W⋯O6	0.90 (2)	2.12 (3)	3.011 (3)	173 (3)
N1—H1A⋯O8vi	0.86	2.15	2.911 (4)	147
N1—H1B⋯O3Wiv	0.86	2.07	2.900 (4)	161
N2—H2⋯O8vi	0.86	2.13	2.900 (4)	150
N2—H2⋯O7vi	0.86	2.25	2.897 (4)	132

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