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 (2R)-2-(3-oxo-6-thiomorpholin-4-ylsulfonyl-[1,2,4]triazolo[4,3-a]pyridin-2-yl)butanoate into molecular formula.
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C16H22N4O5S2
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