O=[N+]([O-])c1cccc(-c2oc(/C=N/c3ccccc3)c([N+](=O)[O-])c2-c2cccc([N+](=O)[O-])c2)c1
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?