O=C1OCc2c1cc1ccc(O)c(OC3OC(CO)C(O)C(O)C3O)c1c2-c1ccc2c(c1)OCO2
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?