You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule ethyl (4S)-2-[3-(2-methoxyethoxy)-2-(pyrrolidine-1-carbonyloxy)phenyl]-4-methyl-5H-1,3-thiazole-4-carboxylate into molecular formula.
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C21H28N2O6S
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