Using COc1ccc(C=Nc2cc(Cl)c(N=CN(C)C)c(Cl)c2)cc1F to produce COc1ccc(CNc2cc(Cl)c(N=CN(C)C)c(Cl)c2)cc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.