O=c1c(Cc2c(O)ccc3ccccc23)nnc2sc(-c3nn4c(=O)c(Cc5c(O)ccc6ccccc56)nnc4s3)nn12
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?