Using CCCCNC(=O)[C@@H](C[C@H](O)[C@H](C[C@H](CNC(=O)c1ccccc1OCCCOC)C(C)C)NC(=O)OC(C)(C)C)C(C)C to produce CCCCNC(=O)[C@@H](C[C@H](O)[C@@H](N)C[C@H](CNC(=O)c1ccccc1OCCCOC)C(C)C)C(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.