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What is the molecular formula of the molecule prop-2-enyl 2-[7-bromo-1-(4-ethoxy-3-methoxyphenyl)-3,9-dioxo-1H-chromeno[2,3-c]pyrrol-2-yl]-4-methyl-1,3-thiazole-5-carboxylate ?
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C28H23BrN2O7S
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