Using [N-]=[N+]=[N-], CC1(CCCCc2nc(C(=O)Cl)co2)OCCO1 to produce CC1(CCCCc2nc(C(=O)N=[N+]=[N-])co2)OCCO1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.