Using CCC(O)C1CCN(C(=O)OC(C)(C)C)CC1, COC(=O)Cc1cccc(O)c1 to produce COC(=O)Cc1cccc(OCCCC2CCN(C(=O)OC(C)(C)C)CC2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.