Using Cc1nc2ccccn2c(=O)c1Br, COc1cccc(C=O)c1OC1CCCC1 to produce COc1cccc(/C=C/c2nc3ccccn3c(=O)c2Br)c1OC1CCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.