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 5-[(4-chloro-3-fluorophenyl)methylamino]-1-methyl-6H-pyrazolo[4,3-d]pyrimidin-7-one is given. What is its corresponding molecular formula?
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C13H11ClFN5O
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