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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1A⋯O1i	0.86	1.99	2.815 (3)	162
C18—H18A⋯O1ii	0.93	2.35	3.064 (5)	133

Symmetry codes: (i) ; (ii) .