Using CNC(=Nc1ccc(Br)c(C(F)(F)F)c1)C(C)(C)OC(C)=O to produce CNC(=Nc1ccc(Br)c(C(F)(F)F)c1)C(C)(C)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.