Using Oc1ncn(-c2cccc(C(F)(F)F)c2)n1, CCOC(=O)C(C)Br to produce CCOC(=O)C(C)Oc1ncn(-c2cccc(C(F)(F)F)c2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.