Using COCC(=O)O, Cc1nc(N)sc1-c1ccc(S(C)(=O)=O)c(C(F)(F)F)c1 to produce COCC(=O)Nc1nc(C)c(-c2ccc(S(C)(=O)=O)c(C(F)(F)F)c2)s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.