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

Cg1, Cg2 and Cg3 are the centroids of the N1/N2/C20–C22, C1–C6 and C14–C19 rings, respectively.

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C7—H7⋯N2i	1.00	2.45	3.418 (2)	161
C3—H3⋯Cg1ii	0.95	2.76	3.609 (2)	149
C6—H6⋯Cg1iii	0.95	2.96	3.900 (3)	171
C18—H18⋯Cg2iv	0.95	3.01	3.797 (7)	141
C21—H21⋯Cg2v	0.95	2.76	3.694 (7)	170
C12—H12⋯Cg3vi	0.95	2.87	3.737 (5)	153

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