You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-(2,3-difluorophenyl)-1-[1-[[3-[(2-methylpropan-2-yl)oxy]pyrazin-2-yl]methyl]piperidin-4-yl]ethanone into its molecular formula.
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C22H27F2N3O2
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