Using CSc1nccc(CC(=O)c2cccc(C(F)(F)F)c2)n1, COC(=O)CBr to produce COC(=O)CC(C(=O)c1cccc(C(F)(F)F)c1)c1ccnc(SC)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.