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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O6—H61⋯O2iii	0.90 (2)	1.87 (2)	2.7597 (14)	165.4 (19)
O6—H62⋯O4iv	0.91 (3)	1.91 (3)	2.8129 (14)	173 (2)
O8—H81⋯O2v	0.86 (2)	1.92 (2)	2.7753 (13)	175.9 (19)
O7—H71⋯O3iv	0.862 (19)	2.037 (19)	2.8950 (12)	173.8 (17)
O5—H51⋯O1iii	0.903 (19)	2.010 (19)	2.9110 (13)	175.4 (17)
O1—H32⋯O3	1.19 (2)	1.21 (2)	2.3894 (15)	173 (2)

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