Hello, please provide a detailed explanation. The problem that needs to be solved is problem 122, I added the solution sheet to be filled and an example of what needs to be done

Problem 122 UV Spectrum max260nm(log102.5) solvent: methanol 13 C NMR Spectrum (50.0 MHz2CDCl3 solution) DEPT CH2CH3CH 1 H NMR Spectrum (200 MHz2,CDCl3 solution) IR: List bands and possible/probable structural units responsible Band (cm1) Possible stretches/functional groups MS: Molecular Formula IHD(DU)= (Show calculation) If you need more space, add any additional signal info here: Mol. Form. C3H4O2IHD= (Show calculation) IHD=2(23+2)4=2 IR: (List bands and possible/probable structural units responsible) 13 C. NMR: Problem 91