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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H2⋯O4i	0.86	1.86	2.692 (3)	164
O4—H1W⋯O1ii	0.84	1.97	2.808 (4)	174
O4—H2W⋯O1iii	0.83	2.07	2.886 (4)	170

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