Using CC(=O)n1c2ccccc2c2cc(Br)ccc21, OB(O)c1ccc(-c2nc3ccccc3s2)cc1 to produce CC(=O)n1c2ccccc2c2cc(-c3ccc(-c4nc5ccccc5s4)cc3)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.