You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[3-(2,4-dichlorophenoxy)-5-nitrophenyl]-2-[3-(difluoromethyl)-5-methylpyrazol-1-yl]acetamide into its molecular formula.
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C19H14Cl2F2N4O4
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