O=c1ccn([C@@H]2O[C@H](CNCc3ccc(-n4cccn4)cc3)[C@@H](O)[C@H]2O)c(=O)[nH]1
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?