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What is the molecular formula of the compound with this IUPAC name 2-amino-9-[(1S,3R)-1-ethyl-4-hydroxy-6-[hydroxy(methoxy)phosphinothioyl]oxy-2-oxabicyclo[3.2.0]heptan-3-yl]-1H-purin-6-one ?
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C14H20N5O6PS
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