Using OB(O)c1ccc(Cl)cc1Cl, CC(C)(C)OC(=O)NCc1cc(N)ncc1Br to produce CC(C)(C)OC(=O)NCc1cc(N)ncc1-c1ccc(Cl)cc1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.