Using CCOC(=O)c1ccc2c(c1)c(Br)nn2C(c1ccccc1)(c1ccccc1)c1ccccc1 to produce O=C(O)c1ccc2c(c1)c(Br)nn2C(c1ccccc1)(c1ccccc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.