Using Cn1cc(-c2cccnc2)c2c(=O)n(CC(F)(F)F)cnc21, BrBr to produce Cn1c(Br)c(-c2cccnc2)c2c(=O)n(CC(F)(F)F)cnc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.