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Methyl (15S,18S,20Z)-12-acetamido-15-[4-(chloroamino)butyl]-31,32-dimethoxy-13,16-dioxo-14,17-diazapentacyclo[21.7.1.12,10.03,8.025,30]dotriaconta-1(31),2(32),3,5,7,9,20,23,25,27,29-undecaene-18-carboxylate


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