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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O2W—H2A⋯O6	0.81 (6)	2.15 (7)	2.868 (5)	148 (7)
O3W—H3A⋯O2	0.82 (7)	2.00 (7)	2.819 (6)	172 (9)
O1W—H1A⋯O4i	0.80 (6)	1.99 (6)	2.762 (5)	165 (7)
N6—H6B⋯O2ii	0.80 (3)	2.19 (4)	2.928 (5)	154 (6)
N5—H5B⋯O5iii	0.81 (6)	2.28 (6)	2.913 (5)	136 (5)

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