Using CCOc1ccc(-n2nc(CO)cc2-c2ccc(Cl)c(Cl)c2)cc1 to produce CCOc1ccc(-n2nc(C=O)cc2-c2ccc(Cl)c(Cl)c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.