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 1-ethyl-2-[[3-(2-hydroxyethyl)oxolan-3-yl]methyl]-3-(2-phenylsulfanylpropyl)guanidine;hydroiodide is given. What is its corresponding molecular formula?
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C19H32IN3O2S
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