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system
Name the molecular formula for the molecule established as 6-[2-(6-aminopyridin-3-yl)ethynyl]-N-[3-chloro-4-[(3-fluorophenyl)methoxy]phenyl]thieno[2,3-d]pyrimidin-4-amine using the IUPAC nomenclature.
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C26H17ClFN5OS
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