O=C(Nc1nc2ncn(CCNCCn3cnc4nc(NC(=O)c5ccccc5)[nH]c(=O)c43)c2c(=O)[nH]1)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?