Using CN1CCN(Cc2ccccc2)CC(NC(=O)c2n[nH]c3ccccc23)C1 to produce CN1CCNCC(NC(=O)c2n[nH]c3ccccc23)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.