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 (2S)-2-[[2-chloro-4-[[(2E,4E)-2-ethenyl-4-hydroxyhexa-2,4-dienyl]carbamoyl]benzoyl]amino]butanoic acid is given. What is its corresponding molecular formula?
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C20H23ClN2O5
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