Nc1ccc(Oc2ccc(C34CC5C6CC7(c8ccc(Oc9ccc(N)cc9)cc8)CC5C(C3)C(C7)C6C4)cc2)cc1
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?