Using CC(C)c1cc(Oc2c(Cl)cc(NC(=O)C(=O)O)cc2Cl)nnc1Cl, CC(=O)[O-] to produce CC(C)c1cc(Oc2c(Cl)cc(NC(=O)C(=O)O)cc2Cl)n[nH]c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.