Using COB(OC)OC, Brc1ccc(C2(c3ccccc3)c3ccccc3-c3cccc(-c4ccccc4)c32)cc1 to produce OB(O)c1ccc(C2(c3ccccc3)c3ccccc3-c3ccccc32)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.