1FZZ:
reference: The crystal structure of the complex of non-peptidic inhibitor of human neutrophil elastase ONO-6818 and porcine pancreatic elastase., Odagaki Y, Ohmoto K, Matsuoka S, Hamanaka N, Nakai H, Toda M, Katsuya Y, Bioorg Med Chem 2001 Mar;9(3):647-51. PMID: 11310599

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