5JYY:
reference: Structure-Based Tetravalent Zanamivir with Potent Inhibitory Activity against Drug-Resistant Influenza Viruses., Fu L, Bi Y, Wu Y, Zhang S, Qi J, Li Y, Lu X, Zhang Z, Lv X, Yan J, Gao GF, Li X, J Med Chem. 2016 Jul 6. PMID: 27341624

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