Using COB(OC)OC, COCCOCN(c1onc(C)c1C)S(=O)(=O)c1ccccc1Br to produce COCCOCN(c1onc(C)c1C)S(=O)(=O)c1ccccc1B(O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.