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system
Name the molecular formula for the molecule established as (Z)-[(7R)-7-ethyl-6-methylidene-8-propan-2-yl-2-(5-pyridin-2-yl-1H-pyrazol-4-yl)-7H-pteridin-5-yl]methylidenehydrazine using the IUPAC nomenclature.
user
C21H25N9
assistant