6NM8:
reference: Fragment-based screening of programmed death ligand 1 (PD-L1)., Perry E, Mills JJ, Zhao B, Wang F, Sun Q, Christov PP, Tarr JC, Rietz TA, Olejniczak ET, Lee T, Fesik S, Bioorg Med Chem Lett. 2019 Mar 15;29(6):786-790. doi: 10.1016/j.bmcl.2019.01.028., Epub 2019 Jan 24. PMID: 30728114

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