Cc1cccc2c(N)c3cccc(C(=O)NCC[N+](C)(C)Cc4ccccc4[N+](=O)[O-])c3nc12.[Cl-]
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?