You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-[[5-(dimethylsulfamoyl)thiophen-2-yl]methyl]-2-methyl-3-(2-thiophen-2-ylpropyl)guanidine;hydroiodide into its molecular formula.
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C16H25IN4O2S3
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