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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H2B⋯O1W	0.89	1.88	2.760 (3)	168
N2—H2A⋯O1Wi	0.89	2.43	3.029 (3)	125
N2—H2A⋯O4ii	0.89	2.29	2.913 (3)	127
N2—H2C⋯O3iii	0.89	1.92	2.797 (3)	166
O1W—H1WB⋯O3iv	0.85	2.23	2.764 (3)	121
O1W—H1WC⋯O4v	0.85	2.00	2.740 (3)	146

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