Using O=C1c2ccccc2C(=O)N1CCCCBr, c1ccc(N2CCNCC2)cc1 to produce O=C1c2ccccc2C(=O)N1CCN1CCN(c2ccccc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.