O=C(c1ccc(Cn2c(=S)[nH]c3ccc(N4CCOCC4)cc3c2=O)cc1)N1CCC(N2CCCCC2)CC1
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?