Using OB(O)c1ccccc1, COC(=O)c1cc(-c2nc(-c3ccc(Cl)c(Cl)c3)cs2)ccc1Br to produce O=C(O)c1cc(-c2nc(-c3ccc(Cl)c(Cl)c3)cs2)ccc1-c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.