Using COC(=O)c1ccc(OC)c(OCC2CCN(C(=O)OC(C)(C)C)CC2)c1 to produce COc1ccc(CO)cc1OCC1CCN(C(=O)OC(C)(C)C)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.