Using CN1CCC(N2C(=O)c3cc(N)c([N+](=O)[O-])cc3C2=O)CC1 to produce CN1CCC(N2Cc3cc(N)c(N)cc3C2=O)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.