Using OB(O)c1cc(Cl)cc(Cl)c1, CC1(c2cccc(Br)c2)N=C(N)c2ccccc21 to produce CC1(c2cccc(-c3cc(Cl)cc(Cl)c3)c2)N=C(N)c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.