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What is the molecular formula of the compound with this IUPAC name 2-[4-(5-chloro-6-oxo-1-phenylpyridazin-4-yl)piperazin-1-yl]-N-[(4R)-4-ethyl-4-methyl-2,5-dioxoimidazolidin-1-yl]acetamide ?
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C22H26ClN7O4
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