Using FC(F)(F)c1ccc2c(c1)N(CCCCl)c1ccccc1S2, [I-] to produce FC(F)(F)c1ccc2c(c1)N(CCCI)c1ccccc1S2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.