Using CCOC(=O)c1cc2c(C(=O)Nc3c(Cl)cncc3Cl)ccc(OC)c2o1 to produce COc1ccc(C(=O)Nc2c(Cl)cncc2Cl)c2cc(C(=O)O)oc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.