Using O=C1c2ccccc2C(=O)N1CCCCBr, Cc1ccc(C2=CCNCC2)cc1 to produce Cc1ccc(C2=CCN(CCCCN3C(=O)c4ccccc4C3=O)CC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.