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 1-[4-[(2S)-2-hydroxybutyl]piperazin-1-yl]-2-[3-(trifluoromethyl)pyrazol-1-yl]ethanone into its molecular formula.
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C14H21F3N4O2
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