CN1C2=CC=CC=CC2=[N+](C)C12C([N+](=O)[O-])=CC(=[N+]([O-])[O-])C=C2[N+](=O)[O-]
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?