You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (3R,6R)-N-[(1S)-1-(2,5-dimethylthiophen-3-yl)ethyl]-2-oxo-6-(trifluoromethyl)piperidine-3-carboxamide into its molecular formula.
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C15H19F3N2O2S
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