You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name 5-N-(2-chloro-4-methoxyphenyl)-7-N-(cyclopropylmethyl)-6-methoxy-7-N-propylpyrazolo[1,5-a]pyrimidine-5,7-diamine into its molecular formula.
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C21H26ClN5O2
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