Using O=C(O)[C@H]1CCCO1, COc1ccc(C[C@H](NC(=O)[C@H](C)N)C(=O)N[C@@H](Cc2ccccc2)C(=O)[C@@]2(C)CO2)cc1 to produce COc1ccc(C[C@H](NC(=O)[C@H](C)NC(=O)[C@H]2CCCO2)C(=O)N[C@@H](Cc2ccccc2)C(=O)[C@@]2(C)CO2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.