Table 1. Hydrogen-bond geometry (Å, °).

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O6—H11⋯O4i	0.82	2.01	2.826 (3)	172
O6—H12⋯O3ii	0.82	2.07	2.879 (3)	168
O5—H10⋯O6	0.82	2.02	2.830 (3)	168
O5—H9⋯O6i	0.82	2.11	2.871 (3)	155
O4—H8⋯O3i	0.82	1.90	2.725 (3)	176
O4—H7⋯O2iii	0.82	2.01	2.824 (3)	170
O1—H4⋯O2i	0.82	1.81	2.630 (2)	172
O1—H3⋯O5	0.82	1.88	2.697 (3)	174

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