Using CN(C)C=O, C=CCCC1(OC(C)=O)CCN(C(=O)OC(C)(C)C)CC1 to produce CC(=O)CCC1(OC(C)=O)CCN(C(=O)OC(C)(C)C)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.