You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 9-[(2R,3R,4S,5S)-5-(benzenesulfonylmethyl)-3,4-dihydroxyoxolan-2-yl]-1H-purin-6-one by IUPAC nomenclature, provide its molecular formula.
user
C16H16N4O6S
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