O=C(O)CNC(=O)c1ccc(NC(=O)/C(=C/c2cccc([N+](=O)[O-])c2)NC(=O)c2ccco2)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?