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What is the molecular formula of the compound with this IUPAC name [[(2R,3R,5R)-5-[5-[[4-(3-aminoprop-1-ynyl)-2-nitrophenyl]methoxymethyl]-2,4-dioxopyrimidin-1-yl]-3-hydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl] phosphono hydrogen phosphate ?
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C20H25N4O17P3
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