COC(=O)/C=C1\C(=O)C=C2[C@@H]3C[C@H]4C[C@H](CC[C@@]4(C)N21)C3(C)NC(C)=O
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?