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