6AHS:
reference: Discovery and structure-activity relationship of imidazolinylindole derivatives as kallikrein 7 inhibitors., Murafuji H, Muto T, Goto M, Imajo S, Sugawara H, Oyama Y, Minamitsuji Y, Miyazaki S, Murai K, Fujioka H, Bioorg Med Chem Lett. 2019 Jan 15;29(2):334-338. doi: 10.1016/j.bmcl.2018.11.011., Epub 2018 Nov 8. PMID: 30522951

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