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 [6-(diethylaminomethyl)pyrazolo[1,5-a]pyrimidin-3-yl]-[(2S)-2-(2-hydroxyethyl)morpholin-4-yl]methanone into its molecular formula.
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C18H27N5O3
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