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system
Provide the molecular formula for the IUPAC named substance [[(Z,1Z)-4-(2-amino-3-nitropyridin-4-yl)oxy-1-cyclohexa-2,4-dien-1-ylidenepent-2-enyl]amino]-[(2-methylpropan-2-yl)oxy]methanol .
user
C21H28N4O5
assistant