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What is the molecular formula of the compound with this IUPAC name 8-[2-[(2E,4Z)-5-ethylhepta-2,4,6-trien-2-yl]oxyethyl]-7-fluoro-9,10-dihydro-2H-[1,2,4]triazino[2,3-a][1,4]diazepin-6-one ?
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C18H23FN4O2
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