4BBG:
reference: Optimized S-trityl-L-cysteine-based inhibitors of kinesin spindle protein with potent in vivo antitumor activity in lung cancer xenograft models., Good JA, Wang F, Rath O, Kaan HY, Talapatra SK, Podgorski D, MacKay SP, Kozielski F, J Med Chem. 2013 Mar 14;56(5):1878-93. doi: 10.1021/jm3014597. Epub 2013 Feb 27. PMID: 23394180

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