CC(=O)O.Nc1nc(N)c2nc(CNc3ccc(C(=O)NC(CCNC(=O)c4ccccc4C(=O)O)C(=O)O)cc3)cnc2n1
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?