You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-cyclopentyl-N-[(1R)-2-(cyclopentylamino)-2-oxo-1-thiophen-2-ylethyl]-2,2,2-trifluoroacetamide into its molecular formula.
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C18H23F3N2O2S
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