Using CCC(=O)Nc1nccc2c1ccn2C(=O)c1c(Cl)cc(C(=O)OC)cc1Cl to produce CCC(=O)Nc1nccc2c1ccn2C(=O)c1c(Cl)cc(C(=O)O)cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.