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system
Name the molecular formula for the molecule established as 4-[1-(2-chlorophenyl)ethyl]-2-imidazo[1,2-a]pyridin-3-yl-4,5,6,7-tetrahydrothieno[2,3-c]azepin-8-one using the IUPAC nomenclature.
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C23H20ClN3OS
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