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

Cg1, Cg2 and Cg3 are the centroids of the C1A–C6A, C7–C12 and C1B–C6B rings, respectively.

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1⋯O2i	0.83 (2)	2.22 (2)	3.039 (4)	170 (4)
C8—H8⋯Cg2ii	0.93	2.93	3.613 (5)	132
C13—H13B⋯Cg1iii	0.96	2.98	3.766 (6)	140
C13—H13B⋯Cg3iii	0.96	2.96	3.763 (7)	143

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