CC(=O)OCC(OC(C)=O)C(OC(C)=O)C(/C=N\Nc1nc2ccccc2c(=O)[nH]1)OC(C)=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?