You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named [(2R,3S,4R,5R)-5-[1-[(2S)-2-amino-3-hydroxypropanoyl]-6-imino-2,3-dihydropurin-9-yl]-3,4-dihydroxyoxolan-2-yl]methyl dihydrogen phosphate is given. What is its corresponding molecular formula?
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C13H21N6O9P
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