COC(=O)C1=C(OC)C(=P2(c3ccccc3)CC(c3ccccc3)=C2c2ccccc2)C(C(=O)OC)=C1C(=O)OC
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?