Using Cn1c(C(F)(F)F)cc(=O)n(-c2c(F)cc(Cl)c3cc(C=O)oc23)c1=O, CC(C)=O to produce Cn1c(C(F)(F)F)cc(=O)n(-c2c(F)cc(Cl)c3cc(C(=O)O)oc23)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.