Using O=C1CCC(=O)N1Br, Cc1ccc(-c2cscc2-c2nnc(C)o2)cc1 to produce Cc1nnc(-c2cscc2-c2ccc(CBr)cc2)o1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.