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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1⋯N4i	0.86 (2)	2.10 (2)	2.954 (4)	171 (3)

Symmetry code: (i) .