please help propose a structure and assign all peaks in this NMR and please help show me how to do it thank you its one question for both

top: C5H8O2

bottom:c5h8

C,H,O, 250 MHZ 'H NMR spectrum in CDCI Source: Adam Fiedler/Reich 3.94 30 20 10 Hz 0 wu 7057.00 6.05 6.90 ppm MUM 5.90 5.85 5.80 ppm 3.75 3.70 ppm 1.90 1.85 ppm 8 2 0 PI CsHg 300 MHz 'H NMR spectrum in CDCI, Source: Aldrich Spectra Viewer 33-09 2.93 2.02 2.00 ar 0.97 2 2.2 2.1 2.0 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 10 9 00 8 7 6 4 3 2 0 5 ppm