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 1-[2-(1,1-dioxo-1,4-thiazinan-4-yl)ethyl]-2-(3-ethoxypropyl)-3-ethylguanidine;hydroiodide into molecular formula.
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C14H31IN4O3S
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