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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O5—H5A⋯O2	0.85 (2)	1.81 (2)	2.630 (2)	161 (3)
O5—H5B⋯N2ii	0.83 (2)	2.04 (2)	2.868 (2)	176
O6—H6A⋯O1iii	0.89 (5)	2.30 (5)	3.175 (3)	167
O6—H6B⋯N1iv	0.87 (2)	2.23 (2)	3.051 (3)	157

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