Using CN1CCC(N2C(=O)c3cccc4c([N+](=O)[O-])ccc(c34)C2=O)CC1 to produce CN1CCC(N2C(=O)c3cccc4c(N)ccc(c34)C2=O)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.