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 3-(2-tert-butylsulfonylethyl)-1-[(2-chlorophenyl)methyl]-1,2-dimethylguanidine;hydroiodide is given. What is its corresponding molecular formula?
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C16H27ClIN3O2S
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