Using COCCl, Cc1cnc(Br)c(NS(=O)(=O)c2ccc(Cl)c(C(F)(F)F)c2)c1 to produce COCN(c1cc(C)cnc1Br)S(=O)(=O)c1ccc(Cl)c(C(F)(F)F)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.