CCOC(=O)C1=C(C)N(NC(=O)Nc2ccccc2)C(=O)C1=P(c1ccccc1)(c1ccccc1)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?