CC1(C)OC2C(COC(c3ccccc3)(c3ccccc3)c3ccccc3)OC(c3c[nH]c4c(N)ncnc34)C2O1
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?