Using COC(=O)[C@@H]1CCCN1C(=O)[C@@H](Cc1ccccc1)NC(=O)OC(C)(C)C to produce CC(C)(C)OC(=O)N[C@H](Cc1ccccc1)C(=O)N1CCC[C@H]1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.