Using O=C([O-])[O-], Cc1cc(Cl)c(N2C(=O)C3=CCCCN3C2=O)cc1O to produce COc1cc(N2C(=O)C3=CCCCN3C2=O)c(Cl)cc1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.