O=C(Nc1cccc([N+](=O)[O-])c1)C(=O)C(C(=O)c1ccccc1F)C1OC(=O)C2C=CC=CC21
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?