You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 1-[2-(6-chloropyridin-3-yl)ethyl]-3-[[6-(2-methoxyethoxy)pyridin-3-yl]methyl]-2-methylguanidine into molecular formula.
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C18H24ClN5O2
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