O=C(Cn1c(=O)n(Cc2nc(-c3ccccc3)no2)c(=O)c2cc3c(cc21)OCO3)Nc1ccc(Cl)cc1
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?