Using CCCCCCS(=O)(=O)c1nnc(NC(=O)Nc2ccc(Cl)c(Cl)c2)s1 to produce CCCCCCSc1nnc(NC(=O)Nc2ccc(Cl)c(Cl)c2)s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.