You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N'-methyl-N-(3-methylsulfonylpropyl)-4-[(3,4,5-trimethoxyphenyl)methyl]piperazine-1-carboximidamide;hydroiodide by IUPAC nomenclature, provide its molecular formula.
user
C20H35IN4O5S
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