You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 4-(2,5-dimethylpyrrol-1-yl)-N-[(Z)-(1-propan-2-ylpyrrol-3-yl)methylideneamino]benzamide into its molecular formula.
user
C21H24N4O
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