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[1-Methoxy-4-[N-[2-(3-oxocyclopentyl)ethyl]-4-[[4-[2-(2-oxo-1,3-dioxolan-4-yl)ethyl-[2-(5-oxooxolan-3-yl)ethyl]amino]phenyl]methyl]anilino]butan-2-yl] formate


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