Using CCOc1cc(-c2ccc(C(C)=O)s2)nc(SC)n1, CCOC(=O)C(F)(F)F to produce CCOc1cc(-c2ccc(C(=O)CC(=O)C(F)(F)F)s2)nc(SC)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.