Using COS(=O)(=O)OC, Cc1cc(-c2ccc(Cl)cc2)nn1C1C(=O)CCC1=O to produce COC1=C(n2nc(-c3ccc(Cl)cc3)cc2C)C(=O)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.