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 (2R)-1-[8-[(2R)-2-carboxypyrrolidin-1-yl]-8-oxooctanoyl]pyrrolidine-2-carboxylic acid is given. What is its corresponding molecular formula?
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C18H28N2O6
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