Using Fc1ccc2ncc(Br)n2n1, CCOC(=O)N(CCNC(=O)C(F)(F)F)c1ccccc1 to produce CCOC(=O)N(CCNc1ccc2ncc(Br)n2n1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.