Using CC(C)[C@H](NC(=O)OCc1ccccc1)C(=O)N[C@H](C(=O)N(C)[C@H](C(=O)N1CCC[C@H]1C(=O)O)C(C)C)C(C)C, CC(C)(C)NC(=O)[C@@H]1CCCN1 to produce CC(C)[C@H](NC(=O)OCc1ccccc1)C(=O)N[C@H](C(=O)N(C)[C@H](C(=O)N1CCC[C@H]1C(=O)N1CCC[C@H]1C(=O)NC(C)(C)C)C(C)C)C(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.