Using O=C([O-])[O-], O=c1[nH]nc(C2CCN(c3ccc([N+](=O)[O-])cc3)CC2)o1 to produce Cn1nc(C2CCN(c3ccc([N+](=O)[O-])cc3)CC2)oc1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.