Using CC(C)(C)OC(=O)NCCCC[C@H](NC(=O)OC(C)(C)C)C(=O)NCC(=O)Nc1ccccc1C(=O)c1cc(Br)ccn1 to produce NCCCC[C@H](N)C(=O)NCC(=O)Nc1ccccc1C(=O)c1cc(Br)ccn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.