Using Brc1cccc(I)c1, OB(O)c1cc(-c2ccccc2)cc2c1oc1ccc(-c3ccccc3)cc12 to produce Brc1cccc(-c2cc(-c3ccccc3)cc3c2oc2ccc(-c4ccccc4)cc23)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.