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system
Please write the molecular formula of the molecule (2E,4E)-2-ethenyl-N-ethyl-4-[3-[7-(5-fluorothiophen-2-yl)-1H-imidazo[4,5-b]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]hexa-2,4-dien-1-amine .
user
C26H24FN7S
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