Using COC(=O)c1cnc2c(c1)N(S(=O)(=O)N1CCC(C(F)(F)F)CC1)CCO2 to produce O=C(O)c1cnc2c(c1)N(S(=O)(=O)N1CCC(C(F)(F)F)CC1)CCO2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.