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system
Name the molecular formula for the molecule established as 5-methyl-1-[(2R,5S)-5-[[[[(2S,5R)-5-(5-methyl-2,4-dioxopyrimidin-1-yl)-2,5-dihydrofuran-2-yl]methoxy-propan-2-yloxyphosphoryl]-propan-2-yloxyphosphoryl]oxymethyl]-2,5-dihydrofuran-2-yl]pyrimidine-2,4-dione using the IUPAC nomenclature.
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C26H36N4O12P2
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