Using CCN(CC)CC, O=C(O)[C@H]1CN2CC[C@@H]1C(=O)C2C(c1ccccc1)c1ccccc1 to produce CN(C)C(=O)[C@H]1CN2CC[C@@H]1C(=O)C2C(c1ccccc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.