O=[N+]([O-])C(/C=C(\Cl)[N+](=O)[O-])=C1N(Cc2ccc(Cl)nc2)CCN1Cc1ccc(Cl)nc1
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?