Table 2. Hydrogen-bond geometry (Å, °) for (II) .

Cg is the centroid of the C1–C6 ring.

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1N⋯O2i	0.81 (2)	2.03 (2)	2.842 (2)	172 (2)
C18—H18⋯O3ii	0.93	2.57	3.496 (3)	171
C2—H2⋯Cg iii	0.93	2.83	3.649 (2)	155

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