Using CCOC(=O)C(C(=O)OC(C)(C)C)C(=O)c1ccc(NC(C)C2CCCC2)cc1 to produce CCOC(=O)CC(=O)c1ccc(NC(C)C2CCCC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.