You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 2-[[2-(difluoromethoxy)-3-ethoxyphenyl]methyl]-1-ethyl-3-[2-(1-methylpiperidin-4-yl)ethyl]guanidine is given. What is its corresponding molecular formula?
user
C21H34F2N4O2
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