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[(3Ar,4R,6S,6aS)-3a-ethynyl-6-fluoro-4-[6-[(2-methylpropan-2-yl)oxycarbonylamino]purin-9-yl]-2-oxo-4,6a-dihydrofuro[3,4-d][1,3]dioxol-6-yl]methyl 2-(3-chlorophenyl)acetate


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