COC(=O)C1(C(=O)OC)CC(=O)c2c(OC(=O)c3cccc(OC)c3C#N)ccc(OC(=O)c3cccc(OC)c3C#N)c2C1
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?