You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule (2R,3S,4R,5R)-5-(4-aminospiro[3,4-dihydro-1H-pyrrolo[2,3-d]pyrimidine-2,1'-cycloundecane]-7-yl)-3-methyl-2-(phenoxymethyl)oxolane-3,4-diol into molecular formula.
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C28H42N4O4
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