Using COC(=O)[C@H](CCCCNC(=O)OC(C)(C)C)NC(=O)[C@H](Cc1c[nH]cn1)NC(=O)CN(C)C(=O)OCc1ccccc1 to produce CNCC(=O)N[C@@H](Cc1c[nH]cn1)C(=O)N[C@@H](CCCCNC(=O)OC(C)(C)C)C(=O)OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.