Using COC(=O)[C@@H](NC(=O)OC(C)(C)C)C(C)(C)S, Fc1ccc(CCCCl)cc1 to produce COC(=O)[C@@H](NC(=O)OC(C)(C)C)C(C)(C)SCCCc1ccc(F)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.