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

Cg3 is the centroid of the C10A–C15A ring.

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2A—H2NA⋯N4B i	0.87 (2)	2.44 (2)	3.127 (3)	136 (2)
N3A—H3NA⋯N1B i	0.82 (2)	2.17 (2)	2.973 (2)	168 (2)
N2B—H2NB⋯N4A i	0.87 (2)	2.50 (2)	3.159 (3)	134 (2)
N3B—H3NB⋯N1A i	0.83 (2)	2.20 (2)	3.019 (2)	169 (2)
N4B—H4ND⋯N1A ii	0.89 (2)	2.43 (2)	3.207 (3)	146 (2)
C11B—H11B⋯Cg3iii	0.93	2.97	3.541 (2)	121

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