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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O2—H2A⋯O15i	0.87 (4)	1.83 (4)	2.697 (3)	171 (4)
O3—H3A⋯O4ii	0.87 (4)	1.78 (4)	2.652 (3)	179 (3)
O4—H4A⋯O10	0.829 (19)	1.98 (2)	2.799 (3)	168 (3)
O9—H9A⋯O11iii	0.80 (4)	1.96 (4)	2.724 (3)	161 (3)
O10—H10⋯O3ii	0.828 (19)	2.18 (2)	2.993 (3)	166 (3)
O11—H11A⋯O3ii	0.816 (19)	1.92 (2)	2.668 (3)	153 (3)
O15—H15A⋯O9	0.89 (2)	2.04 (2)	2.909 (3)	165 (5)
O15—H15B⋯O2ii	0.88 (2)	1.96 (2)	2.820 (3)	167 (5)

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