Using CC(C)(C)C(=O)C(O)C(C(=O)c1ccc(Cl)cc1)n1cncn1 to produce CC(C)(C)C(=O)C=C(C(=O)c1ccc(Cl)cc1)n1cncn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.