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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C9—H9B⋯O4i	0.97	2.48	3.339 (5)	148
O2—H2⋯O4ii	0.85 (6)	1.74 (6)	2.590 (4)	175 (5)

Symmetry codes: (i) ; (ii) .