Geosmin is produced by bacteria, and because humans can detect its odor and taste at extremely low concentrations, it can be an undesirable contaminant of drinking water. Various treatment options can degrade geosmin, including a process called photocatalytic degradation, in which water is irradiated with UV light in the presence of TiO2. (Water SA [online] 2012, 38, No. 5.) Shown below are some of the compounds produced upon the photocatalytic degradation of geosmin. How would you use 1H NMR spectroscopy to distinguish between the given compounds?