Using CI, CCOC(=O)C1(NC(=O)c2cccc3c2CCCC3)Cc2ccccc2C1 to produce CCOC(=O)C1(N(C)C(=O)c2cccc3c2CCCC3)Cc2ccccc2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.