CCCCCCCCCCCCOP(=O)([O-])OP(=O)(O)OCC1OC(n2cc(C)c(=O)[nH]c2=O)CC1O.[Na+]
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?