Using CCCCC(C(C)=O)n1ccnc1, O=Cc1ccc(Cl)c(Cl)c1 to produce CCCCC(C(=O)C=Cc1ccc(Cl)c(Cl)c1)n1ccnc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.