Using OB(O)c1cc2ccccc2s1, CCCC(C)n1ccc2c(S(C)=O)c(OS(=O)(=O)C(F)(F)F)ccc21 to produce CCCC(C)n1ccc2c(S(C)=O)c(-c3cc4ccccc4s3)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.