Using Oc1cc(C(F)(F)F)cc(C(F)(F)F)c1, CCOC(=O)CCCCCCBr to produce CCOC(=O)CCCCCCOc1cc(C(F)(F)F)cc(C(F)(F)F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.