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

Cg1 and Cg2 are the centroids of the C9A–C14A and C9B–C14B rings, respectively.

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1A—H1A⋯O1Ai	0.85 (3)	2.02 (3)	2.852 (3)	165 (2)
N1B—H1B⋯O1Bi	0.83 (3)	2.02 (3)	2.833 (3)	165 (2)
C7A—H72A⋯Cg1ii	0.96	2.71	3.637 (3)	163
C8B—H83B⋯Cg2iii	0.96	2.70	3.640 (3)	167

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