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

Cg1 is the centroid of the N1/C1–C5 ring.

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N3—H1N3⋯N1	0.85 (3)	2.23 (3)	2.676 (3)	113 (2)
N3—H1N3⋯O4i	0.85 (2)	2.35 (2)	3.080 (2)	145 (2)
N2—H1N2⋯N1	0.84 (3)	2.32 (3)	2.685 (3)	107 (3)
N2—H1N2⋯O4i	0.83 (3)	2.55 (3)	3.290 (3)	149 (2)
C9—H9B⋯O2ii	0.96	2.41	3.329 (3)	159
C15—H15B⋯Cg1iii	0.96	2.78	3.544 (4)	137

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