COC(=O)CCC(=O)OC1(C)C(=O)C2=CN(CCN3CCOCC3)C(c3ccc(OC)cc3)=CC2=C(Br)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?