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What is the molecular formula of the compound with this IUPAC name 1-[4-[(9aS)-2-benzoyl-4,4-dimethyl-1,3,6,7,9,9a-hexahydropyrazino[1,2-a]pyrazin-8-yl]piperidin-1-yl]ethanone ?
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C23H34N4O2
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