CCOC(=O)CCC(C(=O)OCC)n1nnc2ccc(Nc3c(C)[n+]([O-])c4cc(Cl)ccc4[n+]3[O-])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?