Using O=C(Oc1ccccc1)c1ccc(O)cc1, Cc1cccc(NC(=O)CCl)c1 to produce Cc1cccc(NC(=O)COc2ccc(C(=O)Oc3ccccc3)cc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.