The unknown compound with molecular formula C4H8O3, has infrared absorptions at 1710 and 2500 to 3100 cm^-1 and has ¹H NMR spectrum shown. Analyze the given data and propose a structure for this compound. Explain how you come up with your proposed compound

An organic compound B with formula C6H14O has the following: IR Spectroscopy      2974 cm-1, 1080 cm-1 Mass Spectrometry       102 (M+), 87, 73 1H NMR Spectroscopy    Eight signals at δ 1.10 (d, 3H), 1.13 (dd, 3H), 1.14 (dd, 3H), 1.59 (ddq, 1H), 1.60 (ddq, 1H), 3.19 (ddq, 1H), 3.51 (dq, 1H), 3.50 (dq, 1H). Compound B is obtained by the reaction of compound A with NaH followed by CH3CH2Br. The stereochemistry of A is "S"  Using this information, deduce a plausible structure for Compound A with correct stereochemistry.

Kindly provide the structure for this spectra.

Pls explain too

Treatment of compound E (molecular formula C4H8O2) with excessCH3CH2MgBr yields compound F (molecular formula C6H14O) afterprotonation with H2O. E shows a strong absorption in its IR spectrum at1743 cm−1. F shows a strong IR absorption at 3600−3200 cm−1. The 1HNMR spectral data of E and F are given. What are the structures of E andF?Compound E signals at 1.2 (triplet, 3 H), 2.0 (singlet, 3 H), and 4.1 (quartet, 2 H) ppm Compound F signals at 0.9 (triplet, 6 H), 1.1 (singlet, 3 H), 1.5 (quartet, 4H), and 1.55 (singlet, 1 H) ppm

The treatment of (CH3)2C=CHCH2Br with H2O forms B (molecular formulaC5H10O) as one of the products. Determine the structure of B from its 1H NMR and IR spectra.

Compound T has the formula C4H,CIO₂. The ¹H NMR, 13C NMR and the IR spectra for Compound T are shown below. Propose a structure for Compound T. (IR is on the next page.) 9 HSP-49-250 DEPT-90 DEPT-135 8 200 7 6 CDS-12-114 Jelle 5 180 160 140 1:3 ppm 4 120 100 : 2 peaks ppm 3 80 2 peaks 2 3 1 bissa owi zar 60 40 0 20 -1 peak 0 anic

Compound Y (molecular formula C6H10) gives four lines in its 13C NMR spectrum (27, 30, 67, and 93 ppm) and the IR spectrum given here. Propose a structure for Y.