You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule ethyl 1-[2-(1,2-dihydroimidazo[1,2-a]benzimidazol-3-yl)-2-oxoethyl]-5-(4-fluorophenyl)-2-methylpyrrole-3-carboxylate into molecular formula.
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C25H23FN4O3
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