Using C[C@H](NC(=O)OCc1ccccc1)C(=O)N[C@@H](CCC(=O)OC(C)(C)C)C(=O)N[C@@H](CC(=O)OC(C)(C)C)C(=O)N[C@@H](CCC(=O)OC(C)(C)C)C(=O)N[C@@H](CO)C(=O)N[C@@H](C)C(=O)OC(C)(C)C to produce C[C@H](N)C(=O)N[C@@H](CCC(=O)OC(C)(C)C)C(=O)N[C@@H](CC(=O)OC(C)(C)C)C(=O)N[C@@H](CCC(=O)OC(C)(C)C)C(=O)N[C@@H](CO)C(=O)N[C@@H](C)C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.