You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[2-(5-chlorothiophen-2-yl)-2-hydroxyethyl]-1-ethyl-3-[1-(oxolan-3-ylmethyl)piperidin-4-yl]guanidine;hydroiodide into its molecular formula.
user
C19H32ClIN4O2S
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