COc1cc(CNc2ncnc3c2ncn3[C@H]2CN(Cc3ccc(-c4ccccc4)cc3)C[C@@H](CO)O2)cc(OC)c1OC
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?