You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (2S)-2-amino-3-methyl-1-[4-[6-(trifluoromethyl)pyridazin-3-yl]oxypiperidin-1-yl]butan-1-one into molecular formula.
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C15H21F3N4O2
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