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What is the molecular formula of the compound with this IUPAC name 5-[6-(2-bicyclo[2.2.1]heptanylamino)-9-[(3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]purin-2-yl]-1H-pyrazole-4-carboxylic acid ?
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C21H25N7O6
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