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

Cg1 is the centroid of the C21–C26 ring and Cg2 is the centroid of the C41–C46 ring.

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H71⋯Cg1i	0.889 (17)	2.608 (17)	3.4782 (12)	166.0 (14)
N2—H72⋯Cg2i	0.858 (17)	2.625 (17)	3.4642 (13)	165.5 (15)

Symmetry code: (i) .