Using CC(C)(C)OC(=O)N1CCN(c2ccc(S(=O)(=O)C3CC3)c(F)c2F)CC1 to produce O=S(=O)(c1ccc(N2CCNCC2)c(F)c1F)C1CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.