C#CCOCCOCCOCCNc1nc(N2CCN(C(=O)Cn3cc(CCO)nn3)CC2)nc(N2CCN(C(=O)Cn3cc(CCO)nn3)CC2)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?