You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named (E)-N-ethenyl-3-[[4-[(2-hydroxy-2-methylpropyl)amino]-6-[6-(trifluoromethyl)pyridin-2-yl]-1,3,5-triazin-2-yl]amino]but-2-enimidoyl fluoride is given. What is its corresponding molecular formula?
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C19H21F4N7O
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