Using Cc1ccn(-c2ccc(F)c(O)c2)n1, O=S(=O)(OS(=O)(=O)C(F)(F)F)C(F)(F)F to produce Cc1ccn(-c2ccc(F)c(OS(=O)(=O)C(F)(F)F)c2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.