Using CCOC(=O)CBr, CC(C)(C)OC(=O)N1C[C@@](C)(c2cc(F)cc(F)c2)NC(=O)C12CCCCC2 to produce CCOC(=O)CN1C(=O)C2(CCCCC2)N(C(=O)OC(C)(C)C)C[C@@]1(C)c1cc(F)cc(F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.