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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O5—H5O⋯O6i	0.92 (3)	1.71 (3)	2.630 (2)	176.7 (17)
C6—H6⋯O2ii	0.95	2.35	3.280 (2)	165
C9—H9A⋯O6iii	0.98	2.56	3.354 (3)	138

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