Using O=Cc1ccc(Cl)cc1, CC1(C(=O)Cn2cncn2)CC1 to produce CC1(C(=O)C(=Cc2ccc(Cl)cc2)n2cncn2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.