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What is the molecular formula of the compound with this IUPAC name 9-[(3aR,5R,6R,6aS)-6-hydroxy-3a-(hydroxymethyl)-3,5,6,6a-tetrahydro-2H-furo[3,2-b]furan-5-yl]-6-amino-1H-purin-2-one ?
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C12H15N5O5
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