An organic compound has 8 carbons. In addition to hydrogens, the compound has 1 bromine atom and possesses 3 degrees of unsaturation. (i) List all possibilities of double bond, ring, triple bond or any combinations of double bond, ring and triple bond.
(ii) What is the molecular formula of the compound.
(iii) If the compound has one ring with 2 methyl substituents on the ring, draw any one acceptable structure of the compound.