Using CCn1nc(C)c(CCBr)c1Sc1cc(Cl)cc(Cl)c1, Nc1cccnc1 to produce CCn1nc(C)c(CNc2cccnc2)c1Sc1cc(Cl)cc(Cl)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.