Exhibit 19-9 Consider the Data Below to Answer the Following Question(s)

Essay

Exhibit 19-9
Consider the data below to answer the following question(s).
C₇H₁₄O
IR:
1715 cm−¹
MS:
M⁺ at m/z = 114,α-cleavage fragment at m/z = 71,
McLafferty rearrangement fragment at m/z = 86.
¹H NMR:
0.92 δ (6H,triplet),1.59 δ (4H,multiplet),2.36 δ (4H,triplet)
-Refer to Exhibit 19-9.What functional group is indicated by the IR data?