You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[(2R)-1-[(2R,6S)-2,6-dimethylmorpholin-4-yl]-1-oxopropan-2-yl]thiophene-2-carboxamide into its molecular formula.
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C14H20N2O3S
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