Using CC(C)N(C(=O)OC(C)(C)C)[C@@H]1CC[C@H](NC(=O)CNC(=O)OCc2ccccc2)[C@H](CO)C1 to produce CC(C)N(C(=O)OC(C)(C)C)[C@@H]1CC[C@H](NC(=O)CN)[C@H](CO)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.