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Under IUPAC nomenclature, a molecule named 1-[4-(2,3-dimethylphenyl)piperazin-1-yl]-2-[[2-(4-fluorophenyl)imidazo[1,2-a]pyrazin-3-yl]amino]ethanone is given. What is its corresponding molecular formula?
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C26H27FN6O
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