Using CCc1cnc2c(NC(=O)c3c(Cl)cccc3Cl)cccc2c1C=O, [O-][Cl+][O-] to produce CCc1cnc2c(NC(=O)c3c(Cl)cccc3Cl)cccc2c1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.