Which compound has a proton NMR spectrum consisting of the following peaks: 0.9 (6H, doublet), 1.0 (3H, triplet), 2.2 (2H, quartet), and 4.0 (1H, septet)? Notation: Chemical shift values are listed first in ppm. The absolute number of hydrogens and their multiplicities are given in parentheses. Hint: A few of the structures might fit the splitting patterns, so you will also need to consider the chemical shift values.

Which compound has a proton NMR spectrum consisting of the following peaks: 0.9 (6H, doublet), 1.0 (3H, triplet), 2.2 (2 H, quartet), and 4.0(1H, septet)? Notation: Chemical shift values are listed first in ppm. The absolute number of hydrogens and their multiplicities are given in parentheses. Hint: A few of the structures might fit the splitting patterns, so you will also need to consider the chemical shift values