Chapter FRP, Problem 26P

Compound Y $\left(C_{10}{H}_{18}{O}_5\right)$ exhibits one ${}^{1}H$ NMR signal at $\delta 1.4$ (a singlet), three signals in its broadband proton decoupled ${}^{13}C$ NMR spectrum at $\delta 28,87$, and 151, and has the following IR spectrum (Figure 1). Propose a structure for Y that is consistent with this data and explain your reasoning.

Figure 1 The IR spectrum of compound Y (Problem 34)