COC(=O)C1(CCSC)NC(c2ccc(O)cc2)C2C(=O)N(c3ccc4c(c3)OCCO4)C(=O)C21
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?