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system
What is the molecular formula of the compound with this IUPAC name 3-[(1E)-1-[2-methyl-5-(4-methylpiperazin-1-yl)phenyl]penta-1,4-dien-2-yl]-3,3a-dihydro-1H-cyclohepta[b]pyrrol-2-one ?
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C26H31N3O
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