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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1A⋯O2i	0.86	2.14	2.997 (2)	173
C11—H11A⋯O1ii	0.97	2.52	3.433 (3)	157
C15—H15⋯O1iii	0.93	2.57	3.315 (3)	137

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