COC(=O)Cc1c(C2C(CC(=O)OC)c3ccccc3N2C2OC(CO)C(O)C(O)C2O)[nH]c2ccccc12
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?