Using CS(=O)(=O)NC(=O)c1cc(F)c(F)cc1F, OCCC1CC1 to produce CS(=O)(=O)NC(=O)c1cc(F)c(OCCC2CC2)cc1F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.