Using Cn1nc(-c2c(F)cc(Cl)c(=O)n2CCC2OCCO2)c(Cl)c1OC(F)F to produce Cn1nc(-c2c(F)cc(Cl)c(=O)n2CCC=O)c(Cl)c1OC(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.