Using Cc1cn(-c2ccccc2)c2cc(Cl)ccc2c1=O, O=C1CCC(=O)N1Br to produce O=c1c(CBr)cn(-c2ccccc2)c2cc(Cl)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.