Using O=C1CCc2c(Cl)cc(Cl)c(OS(=O)(=O)C(F)(F)F)c21, [I-] to produce O=C1CCc2c(Cl)cc(Cl)c(I)c21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.