Using CS(=O)(=O)c1ccc(CN)cc1, CS(=O)c1nc(N)nc(-c2ccco2)c1C#N to produce CS(=O)(=O)c1ccc(CNc2nc(N)nc(-c3ccco3)c2C#N)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.