You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named ethyl 4-[[N-methyl-C-[3-(phenylsulfanylmethyl)pyrrolidin-1-yl]carbonimidoyl]amino]butanoate;hydroiodide by IUPAC nomenclature, provide its molecular formula.
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C19H30IN3O2S
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