You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[(2Z,4Z)-6-(5-methyl-3-quinoxalin-6-yl-1,5-dihydropyrazol-2-yl)hexa-2,4-dien-2-yl]methanimine into its molecular formula.
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C19H21N5
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