Using CCOC(=O)/C=C/C(=O)[O-], Nc1ccc2c(Nc3cccc(Br)c3)ncnc2c1 to produce CCOC(=O)C=CC(=O)Nc1ccc2c(Nc3cccc(Br)c3)ncnc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.