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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1—H1B⋯O4i	0.805 (18)	1.93 (2)	2.726 (3)	169 (4)
O1—H1A⋯O5ii	0.82	1.87	2.661 (3)	161
O2—H2B⋯O4iii	0.82 (5)	1.92 (5)	2.704 (3)	159 (6)
O2—H2A⋯O6ii	0.82	1.94	2.697 (4)	153

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