COC(=O)CN1C(=O)[C@H]2[C@@H](C1=O)[C@@H](c1ccc(C)o1)N1C(=O)CN(CCO)C(=O)[C@@]21Cc1ccccc1
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?