Using COC(=O)c1ccccc1O, CC(C)(C)OC(=O)N1CCOC(CO)C1 to produce COC(=O)c1ccccc1OCC1CN(C(=O)OC(C)(C)C)CCO1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.