You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-[2-[[[1-[4-(cyclopropylmethoxy)-3-fluorophenyl]ethylamino]-(ethylamino)methylidene]amino]ethyl]-2-methylpropanamide;hydroiodide into molecular formula.
user
C21H34FIN4O2
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