Using Cc1nc2ccccn2c(=O)c1Br, CCCCCCOc1c(C=O)cccc1OC to produce CCCCCCOc1c(/C=C/c2nc3ccccn3c(=O)c2Br)cccc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.