You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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4-[4-amino-5-(4-methoxyphenyl)pyrrolo[2,3-d]pyrimidin-7-yl]-2-(hydroxymethyl)cyclopentan-1-ol is the IUPAC name of a molecule. Please give its molecular formula.
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C19H22N4O3
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