COC(=O)[C@H]1[C@@H](OS(=O)(=O)O)CC[C@H]2CN3CCc4c([nH]c5ccccc45)[C@@H]3C[C@H]21
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?