You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named (2-ethyl-1,3-thiazol-5-yl)-[(2S,4S)-4-(hydroxymethyl)-2-methylpiperidin-1-yl]methanone is given. What is its corresponding molecular formula?
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C13H20N2O2S
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