Using ClCc1csc(-c2ccc(Cl)cc2)n1, CSc1c(C#N)c(N)nc(S)c1C#N to produce CSc1c(C#N)c(N)nc(SCc2csc(-c3ccc(Cl)cc3)n2)c1C#N, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.