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Shepherd NE, Abbenante G, Fairlie DP.Shepherd NE, et al. Among authors: abbenante g.Angew Chem Int Ed Engl. 2004 May 10;43(20):2687-90. doi: 10.1002/anie.200352659.Angew Chem Int Ed Engl. 2004.PMID: 18629991No abstract available.