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What is the structure of the compound? Indicate which protons give rise to each NMR signal (assign the peaks in the ¹H spectrum) Explain the useful information in the IR spectrum

C4H₂O 3.0 2 3 % TRANSMITTANCE 100 20 4000 3 GHetretch- 2500 3500 3000 capillary file between sait plates HAVENUMBERS www 0.6 PPM 2000 CEO stretch 1417 1500 19 1000 Copyright 1992 E 600.0

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