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Chen W, Seefeldt T, Young A, Zhang X, Guan X.Chen W, et al. Among authors: zhang x.Bioorg Med Chem. 2011 Jan 1;19(1):287-94. doi: 10.1016/j.bmc.2010.11.026. Epub 2010 Nov 13.Bioorg Med Chem. 2011.PMID: 21131205Free PMC article.