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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O2—H2⋯O6i	0.959 (10)	1.637 (11)	2.5885 (18)	171 (2)
O4—H4⋯O11ii	0.941 (10)	1.806 (12)	2.7166 (19)	162 (2)
O7—H7⋯O6	0.962 (10)	1.483 (10)	2.4334 (19)	169 (2)
O10—H10⋯O5iii	0.938 (10)	1.764 (11)	2.6890 (18)	168 (2)
O12—H12⋯O8iv	0.957 (10)	1.600 (11)	2.5308 (19)	163 (2)

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