You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 6-(6-chloro-1-ethylbenzimidazol-2-yl)-4,5,6,7-tetrahydro-3H-imidazo[4,5-c]pyridine is given. What is its corresponding molecular formula?
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C15H16ClN5
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