Using CCOC(=O)c1[nH]ccc1C, O=C(Cl)Cc1ccc(Cl)cc1 to produce CCOC(=O)c1[nH]cc(C(=O)Cc2ccc(Cl)cc2)c1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.