Using CC(=O)O[C@@H]1[C@H](C)[C@@H](COC(=O)c2ccccc2)O[C@H]1n1c(Br)c(C#N)c2c(N)ncnc21 to produce CC(=O)O[C@@H]1[C@H](C)[C@@H](COC(=O)c2ccccc2)O[C@H]1n1cc(C#N)c2c(N)ncnc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.