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[(3Ar,5R,6R,6aR)-5-[[[[(2R,3S,4R,5R)-5-(6-aminopurin-9-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-hydroxyphosphoryl]oxymethyl]-2-oxo-3a,5,6,6a-tetrahydrofuro[2,3-d][1,3]dioxol-6-yl] methyl carbonate


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