O=[N+]([O-])/C(C(=C(Cl)Cl)N1CCN(Cc2ccccc2)CC1)=C1\NCCN1Cc1ccc(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?