Using NCC(O)c1cc(Cl)cc(Cl)c1, COC(=O)Cc1ccc(OCC(C)=O)cc1 to produce COC(=O)Cc1ccc(OCC(C)NCC(O)c2cc(Cl)cc(Cl)c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.