O=C(Cn1c(=O)n(-c2ccc(Cl)cc2)c(=O)c2c3c(sc21)CCCCC3)Nc1cccc(Cl)c1
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?