Using CC(C)(C)OC(=O)N1C[C@@H](c2ccccc2)NC(=O)C12COCCOC2, COC(=O)CBr to produce COC(=O)CN1C(=O)C2(COCCOC2)N(C(=O)OC(C)(C)C)C[C@H]1c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.