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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O3H—H1⋯O4vi	0.67 (4)	2.35 (4)	2.788 (3)	125 (4)
O3H—H1⋯O5vi	0.67 (4)	2.66 (4)	2.977 (2)	112 (4)

Symmetry code: (vi) .