CCOC(=O)CNC(=O)N(C)[C@H]1C[C@H]2c3[nH]c4ccccc4c3CCN2C(=O)[C@H]1[C@H](C)O
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?