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Acknowledgements
We are extremely grateful to the Region of Haute-Normandie
for financial support, in particular to M.H. The author thanks
Dr Morgane Senselme (IRCOF, Universite´ de Rouen) for single-
crystal X-ray analysis.
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6512 | Org. Biomol. Chem., 2011, 9, 6509–6512
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