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 3-chloro-6-[1-[3,6-dimethyl-2-(2-methylimidazo[1,2-a]pyridin-6-yl)-4-oxochromen-8-yl]ethylamino]-2-fluorobenzoic acid is given. What is its corresponding molecular formula?
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C28H23ClFN3O4
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