Using [Br-], Nc1ccc2c(c1)c(=O)oc1cccc(OC(F)F)c12 to produce Nc1ccc2c(c1Br)c(=O)oc1cccc(OC(F)F)c12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.