You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 1-[2-[[4-(4-methoxyanilino)-6-methylpyrimidin-2-yl]amino]ethyl]-3-(2,3,4-trifluorophenyl)urea into molecular formula.
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C21H21F3N6O2
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