Using O=C(O)CC(=O)Nc1ccc(C(=O)c2ccc(Cl)cc2)cc1 to produce O=C(c1ccc(Cl)cc1)c1ccc2[nH]c(=O)cc(O)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.