Using CCOC(=O)C(=O)C(C(C)=O)C(=O)OC(C)(C)C, CCN(CC)CC to produce CCOC(=O)c1noc(C)c1C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.