4N66:
reference: Methyl, Ethyl, Propyl, Butyl: Futile But Not for Water, as the Correlation of Structure and Thermodynamic Signature Shows in a Congeneric Series of Thermolysin Inhibitors., Krimmer SG, Betz M, Heine A, Klebe G, ChemMedChem. 2014 Mar 13. doi: 10.1002/cmdc.201400013. PMID: 24623396

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