O=C1/C(=C\c2ccccc2)C2/C(=C\c3ccccc3)C(=O)/C(=C\c3ccccc3)C2/C1=C\c1ccccc1
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?