Using COC(C)=O, CC(C)(C)[S@](=O)/N=C/c1ccc(OC(F)F)cc1 to produce COC(=O)C[C@@H](N[S@@](=O)C(C)(C)C)c1ccc(OC(F)F)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.