You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[(S)-(5-chloropyridin-2-yl)-[3-fluoro-5-(trifluoromethyl)phenyl]methyl]-4,4,4-trifluoro-2-methylidenebutan-1-amine into its molecular formula.
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C18H14ClF7N2
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