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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N5—H5A⋯N4i	0.86 (3)	2.30 (4)	3.098 (6)	154 (3)
N5—H5B⋯N2ii	0.86 (3)	2.48 (3)	3.186 (5)	140 (4)
N7—H7A⋯N3iii	0.86 (4)	2.56 (3)	3.207 (7)	134 (3)
N8—H8B⋯N3iii	0.86 (3)	2.48 (4)	3.164 (6)	138 (3)
N9—H9A⋯N1iv	0.86 (2)	2.58 (3)	3.387 (6)	156 (5)
N10—H10C⋯N2ii	0.87 (3)	2.34 (3)	3.198 (5)	173 (5)

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