Using NC(=O)C1CCN(c2nc(Cl)ncc2Br)CC1, OB(O)c1ccccc1 to produce NC(=O)C1CCN(c2nc(Cl)ncc2-c2ccccc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.