You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[8-[1,6-dimethyl-2-oxo-4-(trifluoromethyl)pyridin-3-yl]-3,4-dihydro-2H-chromen-5-yl]propanoic acid into its molecular formula.
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C20H20F3NO4
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