COC(=O)C1=C(C(=O)OC)[C@@H]2Nc3ccccc3[C@@]23C[C@@H](C(=O)OC)N(C(=O)C2CCC2)C3=N1
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?