O=C(O)c1cc(O)c2c(c1)C([C@@H]1c3cccc(O)c3C(=O)c3c(O)cc(C(=O)O)cc31)c1cccc(O)c1C2=O
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?