Using BrCc1ccccc1, C[C@H](c1ccccc1)N1C(=O)N[C@@H]2C(=O)OC[C@@H]21 to produce O=C1OCC2NC(=O)N(Cc3ccccc3)C12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.