Using O=C1Nc2ccccc2C(c2ccc(Cl)cc2)N1C1CCN(Cc2ccccc2)CC1 to produce O=C1Nc2ccccc2C(c2ccc(Cl)cc2)N1C1CCNCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.