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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H2⋯O1W i	0.93 (3)	1.72 (3)	2.641 (2)	170 (2)
N3—H3A⋯O1	0.94 (2)	1.99 (2)	2.926 (2)	171.1 (19)
N3—H3B⋯O2ii	0.84 (2)	2.16 (3)	2.982 (2)	165 (2)
O1W—H1W⋯O1iii	0.75 (3)	1.96 (3)	2.698 (2)	166 (3)
O1W—H2W⋯O2	0.78 (4)	1.99 (4)	2.729 (2)	158 (3)

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