Cl.O=C1c2cccc3cc4ccccc4c(c23)C(=O)N1CCNCCN1C(=O)c2cccc3cc4ccccc4c(c23)C1=O
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?