Detailed analysis of NMR CPMG method is presented that enables direct sampling of the spectrum of the chemical exchange rate. The experiment on sucrose solution gives the spectrum that cannot be described single parameter of chemical exchange rate and indicates a much more complicated dynamics of molecular conformations in these processes. The result confirms that the method can provide insight into the details of the dynamics of molecular conformations, which are not limited to a single one, but can include chemical exchanges with multiple molecules.