You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name 3-[[(E)-3-(4-fluorophenyl)but-2-enoyl]amino]-4-methyl-N-(2,2,2-trifluoroethyl)benzamide into its molecular formula.
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C20H18F4N2O2
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