Using Nc1ccc(NNC(=O)c2ccc(Cl)cc2)cc1, S=C=NCc1ccccc1 to produce O=C(NNc1ccc(NC(=S)NCc2ccccc2)cc1)c1ccc(Cl)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.