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 3-[2-[4-[(2R)-2-hydroxy-3,3-dimethylbutyl]piperazin-1-yl]-2-oxoethyl]-1,3-thiazolidin-4-one is given. What is its corresponding molecular formula?
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C15H27N3O3S
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