You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[5-[(3,5-difluorophenyl)methyl]-1,3-thiazol-2-yl]-3-(2,5-dimethoxyphenyl)propanamide into its molecular formula.
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C21H20F2N2O3S
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