You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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4-[(Z)-(5-fluoroindol-3-ylidene)methyl]-5-(1-methylpyrrol-2-yl)-1,2-dihydropyrazol-3-one is the IUPAC name of a molecule. Please give its molecular formula.
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C17H13FN4O
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