Using C=CCc1c(CC(=O)O)c2ccccc2n1C(=O)OC(C)(C)C, COC(=O)[C@@H](N)Cc1cc(F)cc(Br)c1 to produce C=CCc1c(CC(=O)N[C@@H](Cc2cc(F)cc(Br)c2)C(=O)OC)c2ccccc2n1C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.