CCCCCCCCCCCCOC(=O)N1CCN(/[N+]([O-])=N/Oc2ccc([N+](=O)[O-])cc2[N+](C)=O)CC1
Aromatic rings (also known as aromatic compounds or arenes) are hydrocarbons which contain benzene, or some other related ring structure. How many aromatic rings does the molecule contain?