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)-2-[[3-cyclopentyl-4-(9H-fluoren-9-ylmethoxycarbonylamino)butanoyl]amino]butanoic acid is given. What is its corresponding molecular formula?
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C28H34N2O5
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