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 [(2R)-1-(2,4-dimethylanilino)-1-oxopropan-2-yl] (3S)-6-chloro-3,4-dihydro-2H-chromene-3-carboxylate is given. What is its corresponding molecular formula?
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C21H22ClNO4
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