Using CCON, CCOC=C(C(=O)c1ccc(C(F)(F)F)cc1S(C)(=O)=O)C(=O)C1CC1 to produce CCON=CC(C(=O)c1ccc(C(F)(F)F)cc1S(C)(=O)=O)C(=O)C1CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.