Using CI, COc1ccccc1N1CCCC[C@H](NC(=O)OC(C)(C)C)C1=O to produce COc1ccccc1N1CCCC[C@H](N(C)C(=O)OC(C)(C)C)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.