Using OB(O)c1ccncc1, COc1cc2nccc(Oc3cc4ccccc4nc3Br)c2cc1OC to produce COc1cc2nccc(Oc3cc4ccccc4nc3-c3ccncc3)c2cc1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.