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 2-[2-[(2R)-2-[(3S)-4-cyclopentyl-3-hydroxybut-1-enyl]-5-oxopyrrolidin-1-yl]ethylsulfanyl]-1,3-thiazole-4-carboxylic acid is given. What is its corresponding molecular formula?
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C19H26N2O4S2
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