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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1—H1A⋯O3ii	0.85	1.73	2.582 (3)	178
O2—H2A⋯O4ii	0.82	1.84	2.648 (3)	170
O5—H5⋯O3	0.82	2.15	2.641 (5)	119
O6—H6⋯O4	0.82	2.22	2.693 (5)	118
C2—H2⋯O5iii	0.93	2.38	3.249 (6)	156
C3—H3⋯O4iv	0.93	2.50	3.217 (4)	134
C4—H4⋯O5	0.93	2.45	3.258 (5)	146

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