Using Nc1ccncn1, O=S(=O)(Oc1c(F)c(F)c(F)c(F)c1F)c1ccc2c(Br)cccc2c1 to produce O=S(=O)(Nc1ccncn1)c1ccc2c(Br)cccc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.