CN1C(=O)[C@H]2[C@H]3C[C@@H]([C@H]2C1=O)[C@@H]1C(c2ccc(Cl)cc2)=NO[C@H]31
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?