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 1-[4-[6-(2,4-dimethylphenyl)pyridazin-3-yl]piperazin-1-yl]-2-(4-methylphenoxy)ethanone is given. What is its corresponding molecular formula?
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C25H28N4O2
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