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 (E,4R,5S)-N-(2-aminophenyl)-5-hydroxy-5-[4-(2-hydroxyethoxy)phenyl]-4-methylpent-2-enamide is given. What is its corresponding molecular formula?
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C20H24N2O4
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