Using CC(C)(C)OC(=O)N1[C@H](CC(NCc2ccccc2)C(=O)O)CC[C@H]1C(=O)O to produce CC(C)(C)OC(=O)N1[C@H](CC(N)C(=O)O)CC[C@H]1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.