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 ethyl (3R)-3-[(3-chlorophenyl)methyl]-1-(pyrazolo[1,5-a]pyrimidine-3-carbonyl)piperidine-3-carboxylate into molecular formula.
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C22H23ClN4O3
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