Using COC(=O)C[C@H](NC(=O)[C@@H]1CCCN(C(=O)CCC2CCN(C(=O)OC(C)(C)C)CC2)C1)c1cccc(OCc2ccccc2)c1 to produce COC(=O)C[C@H](NC(=O)[C@@H]1CCCN(C(=O)CCC2CCN(C(=O)OC(C)(C)C)CC2)C1)c1cccc(O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.