CC(C)(C)[C@H](NC(=O)c1ccc(N)c(Cl)c1)C(=O)N1CCC[C@H]1C(=O)N[C@H](C#N)Cc1nnn[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?