CC(C)[C@H](NC(=O)[C@@H](NS(=O)(=O)Cc1ccccc1)C(C)C)C(=O)NNc1ccccc1.O=CO
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?