Using OB(O)c1ccnc(F)c1, OC(c1ccc(Cl)cc1)c1cc(Br)sc1-c1ncn(C2CCCCO2)n1 to produce OC(c1ccc(Cl)cc1)c1cc(-c2ccnc(F)c2)sc1-c1ncn(C2CCCCO2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.