Table 2. Hydrogen-bond geometry (Å, °) for II .

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O3—H3B⋯O2i	0.91 (3)	1.79 (3)	2.692 (3)	176 (3)
O3′—H3C⋯O2′i	0.91 (5)	1.79 (5)	2.690 (6)	169 (4)

Symmetry code: (i) .