You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-ethyl-3,3-dimethyl-N'-[[2-(propan-2-ylsulfamoylmethyl)phenyl]methyl]pyrrolidine-1-carboximidamide;hydroiodide is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H35IN4O2S
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