C#CCOCCOCCOCCNc1nc(N2CCOCC2)nc(N2CCN(C(=O)[C@H](Cc3cc4ccccc4[nH]3)n3cc([C@@H](N)CC(C)C)nn3)CC2)n1.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?