Using O=C1CCC(=O)N1Br, Cc1ccc2c(-c3ccccc3)cc(C#N)nc2c1 to produce N#Cc1cc(-c2ccccc2)c2ccc(CBr)cc2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.