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 (4S,5R)-5-[1-(5-chloro-2-hydroxyphenyl)-2,5-dimethylpyrrol-3-yl]-1-(4-ethylphenyl)-4-pyridin-2-ylimidazolidine-2-thione is given. What is its corresponding molecular formula?
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C28H27ClN4OS
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