You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 1-[(1,4-dimethylpiperazin-2-yl)methyl]-2-methyl-3-[(1-thiophen-2-ylcyclohexyl)methyl]guanidine;hydroiodide into molecular formula.
user
C20H36IN5S
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