Cc1oc2cc3oc(=O)c(CC(=O)NCC(=O)N[C@@H](C(=O)O)c4ccccc4)c(C)c3cc2c1C
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?