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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H1⋯Cl1i	0.88 (1)	2.21 (1)	3.074 (2)	165 (2)
N3—H2⋯Cl1	0.88 (1)	2.62 (2)	3.380 (2)	146 (2)
N4—H3⋯Cl1	0.88 (1)	2.31 (1)	3.157 (2)	160 (2)
N4—H4⋯N1	0.88 (1)	2.06 (2)	2.713 (2)	131 (2)

Symmetry code: (i) .