Using CC(=O)SC(C(=O)N1CCC[C@H]1C(=O)O)C(F)(F)F to produce O=C(O)[C@@H]1CCCN1C(=O)C(S)C(F)(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.