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Langley DB, Brown DE, Cheruzel LE, Contakes SM, Duff AP, Hilmer KM, Dooley DM, Gray HB, Guss JM, Freeman HC.Langley DB, et al. Among authors: duff ap.J Am Chem Soc. 2008 Jun 25;130(25):8069-78. doi: 10.1021/ja801289f. Epub 2008 May 29.J Am Chem Soc. 2008.PMID: 18507382Free PMC article.