Using CCOC(=O)CC#N, O=C(Cl)c1nn(-c2ccccc2)c2c1CSc1ccccc1-2 to produce CCOC(=O)C(C#N)C(=O)c1nn(-c2ccccc2)c2c1CSc1ccccc1-2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.