4IXH:
reference: Optimization of Benzoxazole-Based Inhibitors of Cryptosporidium parvum Inosine 5'-Monophosphate Dehydrogenase., Gorla SK, Kavitha M, Zhang M, Chin JE, Liu X, Striepen B, Makowska-Grzyska M, Kim Y, Joachimiak A, Hedstrom L, Cuny GD, J Med Chem. 2013 May 23;56(10):4028-43. doi: 10.1021/jm400241j. Epub 2013 May 13. PMID: 23668331

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