Using O=C(Cl)OCc1ccccc1, COCc1cc(C(N)C(=O)O)ccc1O to produce COCc1cc(C(NC(=O)OCc2ccccc2)C(=O)O)ccc1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.