Using CCCN1CCc2c(n(C(C)=O)c3cc([N+](=O)[O-])ccc23)C1 to produce CCCN1CCc2c([nH]c3cc(N)ccc23)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.