Using Cn1cc(C(=O)C(=O)N2CCCC2)c2ccc([N+](=O)[O-])cc21 to produce Cn1cc(CCN2CCCC2)c2ccc([N+](=O)[O-])cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.