Using CCOC(=O)[C@H](CCCCC1CCN(C(=O)OCc2ccccc2)CC1)N[C@@H](CCCCNC(=O)OCc1ccccc1)C(=O)N1CCC[C@H]1C(=O)OCc1ccccc1 to produce NCCCC[C@H](N[C@@H](CCCCC1CCNCC1)C(=O)O)C(=O)N1CCC[C@H]1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.