You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-(3-fluorophenyl)-6-(4-methoxyphenyl)-3-oxo-N-[(2R)-1,1,1-trifluoro-3-hydroxypropan-2-yl]pyridazine-4-carboxamide into its molecular formula.
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C21H17F4N3O4
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