CC(C)C[C@@H](CC(=O)N[C@@H](CCC(=O)O)CC(=O)O)NC(=O)[C@@H]1CCCC[C@H]1NC(=O)C[C@@H](NC(=O)C[C@H](Cc1c[nH]c2ccccc12)NC(=O)[C@@H]1CNCC[C@H]1N)C(C)C
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?