Using O=C(NC(c1ccccc1)c1ccccc1)c1c[nH]cn1, CCCCCCC(Br)C#N to produce CCCCCCC(C#N)n1cnc(C(=O)NC(c2ccccc2)c2ccccc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.