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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N4—H4D⋯O1	0.86 (2)	1.99 (3)	2.691 (3)	138 (2)
O2—H2⋯N3i	0.82	1.95	2.746 (3)	165
C7—H7A⋯O1ii	0.97	2.40	3.214 (3)	141
C12—H12⋯Cg2iii	0.93	2.94	3.836 (3)	163

Symmetry codes: (i) ; (ii) ; (iii) . Cg2 is the centroid of the C1–C6 ring.