Nc1ncnc2c1nc(Sc1ccc(Cl)cc1)n2[C@@H]1O[C@@H]2COP(=O)([O-])O[C@H]2[C@H]1O.[Na+]
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?