Using CC(C)(C)OC(=O)NC(=O)OC(C)(C)C, Fc1ccc(CBr)c(I)c1 to produce CC(C)(C)OC(=O)N(Cc1ccc(F)cc1I)C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.