Cn1c(=O)c2c(nc(NCCNc3nc4c(c(=O)n(C)c(=O)n4C)n3C)n2C)n(C)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?