Using CCOC(=O)c1ccc(N2C(=O)N(C3CC3)C3(CCCCCC3)C2=O)cc1 to produce CCOC(=O)c1ccc(N2CC3(CCCCCC3)N(C3CC3)C2=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.