Using O=C(NCc1cccs1)c1cccnc1S, Fc1ccc(CCCBr)cc1 to produce O=C(NCc1cccs1)c1cccnc1SCCCc1ccc(F)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.