Using CC(=O)N[C@@H](Cc1ccc(O)cc1)C(=O)N[C@H](C(=O)N1CCCCC1C(=O)NC1CC(=O)OC1OCc1ccccc1)C(C)C to produce CC(=O)N[C@@H](Cc1ccc(O)cc1)C(=O)N[C@H](C(=O)N1CCCCC1C(=O)NC(C=O)CC(=O)O)C(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.