Using Nc1ccc(Cl)cc1C(=O)c1ccc(O)cc1, O=C(Br)CBr to produce O=C(CBr)Nc1ccc(Cl)cc1C(=O)c1ccc(O)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.