O=C(CN1CCN(C/C=C/c2ccccc2)CC1)Nc1cc([N+](=O)[O-])ccc1Cl.O=C(O)C(=O)O
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?