Using BrC(Br)(Br)Br, O=C(c1c(Cl)cccc1Cl)N(C(=O)c1c(Cl)cccc1Cl)c1ccc(CO)cn1 to produce O=C(c1c(Cl)cccc1Cl)N(C(=O)c1c(Cl)cccc1Cl)c1ccc(CBr)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.