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 4-[4-[[6-(azetidin-1-yl)pyrido[3,4-d]pyrimidin-4-yl]amino]-2-chlorophenoxy]piperidine-1-carboxylic acid into molecular formula.
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C22H23ClN6O3
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