Using C=C[B-](F)(F)F, COC(=O)[C@@H]1C[C@@H](OC(=O)N2Cc3cccc(Br)c3C2)CN1C(=O)OC(C)(C)C to produce C=Cc1cccc2c1CN(C(=O)O[C@@H]1C[C@@H](C(=O)OC)N(C(=O)OC(C)(C)C)C1)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.