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 (Z)-7-[(2R,4R,5S)-2-methyl-4-[(E)-(phenylcarbamothioylhydrazinylidene)methyl]-1,3-dioxan-5-yl]hept-5-enoic acid is given. What is its corresponding molecular formula?
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C20H27N3O4S
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