Using OB(O)c1ccc(Cl)cc1, COc1cc(-c2cnc(N)c3c(Br)csc23)cc(OC)c1OC to produce COc1cc(-c2cnc(N)c3c(-c4ccc(Cl)cc4)csc23)cc(OC)c1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.