COc1cc2c(cc1OC)-c1c(oc3cc(OC4OC(CO)C(O)C(O)C4O)c(OC)cc3c1=O)C(O)O2
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?