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 diethyl (3S,4E)-4-[2-(dimethylamino)-2-oxoethylidene]-3-ethenyl-3-methylcyclopentane-1,1-dicarboxylate is given. What is its corresponding molecular formula?
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C18H27NO5
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