Using CCOC(=O)C(Cl)=Cc1cc(NC(=O)CC(C)CC(=O)O)ccc1Cl to produce CCOC(=O)C(Cl)=Cc1cc(N2C(=O)CC(C)CC2=O)ccc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.