O=C1c2ccccc2C(=O)[C@]23O[C@]12[C@@H](O)[C@H]1O[C@H]1C31Oc2cccc3cccc(c23)O1
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?