O=C(C[n+]1cc(-c2ccc(Cl)c(Cl)c2)n2c1CCC2)N1c2ccccc2Sc2ccccc21.[Cl-]
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?