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 6-chloro-N-(1,3-dihydroxypropan-2-yloxy)-7-(2-fluoro-4-methylanilino)-5-oxo-2,3-dihydro-1H-indolizine-8-carboxamide;ethane is given. What is its corresponding molecular formula?
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C21H27ClFN3O5
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