Using CN1C(=O)N(c2ccccc2)C2(CCN(Cc3ccccc3)CC2)C1=O to produce CN1C(=O)N(c2ccccc2)C2(CCNCC2)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.