Using Nc1cccc(C(=O)Nc2ccc(NNC=O)cc2)c1, S=C(Cl)Cl to produce O=CNNc1ccc(NC(=O)c2cccc(N=C=S)c2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.