Using Cc1nc[nH]c1/C=C1\C(=O)Nc2ccc([N+](=O)[O-])c(Br)c21, OB(O)c1ccccc1 to produce Cc1nc[nH]c1/C=C1\C(=O)Nc2ccc([N+](=O)[O-])c(-c3ccccc3)c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.