Using c1ccc(C(c2ccccc2)(c2ccccc2)n2cncn2)cc1, BrBr to produce Brc1ncnn1C(c1ccccc1)(c1ccccc1)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.