Cc1c(C)c2c(OCC(=O)N[C@@H](Cc3ccccc3)C(=O)O)cc3c(c2oc1=O)CCC(C)(C)O3
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?