You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 3-[1-(3,5-dichloropyridine-4-carbonyl)-2,3-dihydroindol-5-yl]-2-[(3-oxo-5-propylcyclohexylidene)amino]propanoic acid by IUPAC nomenclature, provide its molecular formula.
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C26H27Cl2N3O4
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