You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name 6-amino-5-(3-chlorophenyl)-7-(1-ethylbenzimidazol-2-yl)pyrrolo[2,3-b]pyrazine-2,3-dicarbonitrile into its molecular formula.
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C23H15ClN8
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