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 2-[5-[[3-(2-cyclopropylethynyl)-5-fluoro-1,7-naphthyridin-8-yl]amino]-2-fluorophenyl]ethyl N'-methylcarbamimidate into molecular formula.
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C23H21F2N5O
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