Using COc1ccccc1N1CCNCC1, ClCc1oc(-c2ccccc2)nc1Cc1ccccc1 to produce COc1ccccc1N1CCN(Cc2oc(-c3ccccc3)nc2Cc2ccccc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.