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-[2-[1-(3-chloro-4-fluorophenyl)-2,5-dimethylpyrrol-3-yl]-2-oxoethyl]-5,6-diethyl-3-oxopyridazine-4-carbonitrile into molecular formula.
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C23H22ClFN4O2
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