4. An unknown compound has the formula C3 H6 O.a. There are at least eight (8) possible structures. Draw three (3) differentcompounds, each with a unique functional group. For eachcompound you draw, identify one physical or chemical property thatcould be used to identify the correct structure. b. How would infrared spectroscopy help to differentiate the structures? c. Predict the 1 H NMR spectrum for each of the compounds you drew inpart (a ), above..