You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named (4E,5R)-5-(4-ethoxyphenyl)-1-(6-fluoro-1,3-benzothiazol-2-yl)-4-[hydroxy-(4-methoxyphenyl)methylidene]pyrrolidine-2,3-dione by IUPAC nomenclature, provide its molecular formula.
user
C27H21FN2O5S
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