Using C[C@H]1C(=O)N2C(CN1C(=O)OCc1ccccc1)OC[C@@H]2CCN1CCC2(CC2)[C@H](O)C1 to produce C[C@@H]1NCC2OC[C@H](CCN3CCC4(CC4)[C@H](O)C3)N2C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.