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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O16—H16⋯O9i	0.82	1.86	2.667 (2)	167
C6—H6⋯O9	0.93	2.46	2.785 (3)	100
C11—H11⋯O16ii	0.93	2.55	3.425 (3)	157

Symmetry codes: (i) ; (ii) .