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 4-(dimethylamino)-2-[[1-(9H-fluoren-9-ylmethoxycarbonylamino)cyclobutanecarbonyl]amino]butanoic acid is given. What is its corresponding molecular formula?
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C26H31N3O5
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