You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-[4-(1,3-dihydroisoindol-2-yl)-4-oxobutyl]-1-(3-ethoxyspiro[3.3]heptan-1-yl)-3-ethylguanidine;hydroiodide into molecular formula.
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C24H37IN4O2
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