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-ethyl-3-(2-methoxy-2-methylpropyl)-2-[[3-[(2-methylpropan-2-yl)oxymethyl]phenyl]methyl]guanidine into molecular formula.
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C20H35N3O2
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