COc1ccc(-[n+]2c(-c3ccccc3)cc(-c3ccc(C)cc3)cc2-c2ccccc2)cc1.[O-][Cl+3]([O-])([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?