Using COCCOC1(C(=O)Nc2cccc(OC(=O)N(C)C)c2)CCN(C(=O)OC(C)(C)C)CC1 to produce COCCOC1(C(=O)Nc2cccc(OC(=O)N(C)C)c2)CCNCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.