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

Cg1 is the centroid of the C3–C8 ring.

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1N⋯N3	0.88 (2)	1.98 (3)	2.624 (3)	130 (3)
C12′—H12C⋯N2i	0.98	2.58	3.483 (3)	154
C13—H13⋯Cg1ii	0.95	2.76	3.582 (3)	145

Symmetry codes: (i) ; (ii) .