You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 6-[4-[3-[(2S)-2-[(5-methyl-6-oxo-1H-pyridazin-4-yl)oxy]-2-pyridin-4-ylethoxy]propanoyl]piperazin-1-yl]pyridine-3-carbonitrile into molecular formula.
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C25H27N7O4
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