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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C1—H1⋯N4i	0.93	2.50	3.359 (5)	153
C6—H6⋯N4ii	0.93	2.56	3.447 (5)	159

Symmetry codes: (i) ; (ii) .