Using N[C@@H](CC1CCCCC1)C(=O)O, CCN(CC(=O)N[C@@H](CC(=O)O)C(=O)N[C@@H](CC1CCCCC1)C(=O)O)C(=O)CCCC1CCNCC1 to produce COC(=O)[C@@H](N)CC1CCCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.