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 1-[(4-chlorophenyl)methyl]-8-[[(2R)-2,3-dihydroxypropyl]amino]-3-methyl-7H-purine-2,6-dione into molecular formula.
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C16H18ClN5O4
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