Chapter 14, Problem 42P

Compound E has the spectral features given below. What is its structure?

MS $\left(\text{m/z}\right)$: $M{\cdot }^{+}202$

IR $\left(c{m}^{-1}\right)$: 3030–3080, 2150 (very weak), 1600, 1490, 760, and 690

${}^{1}HNMR\left(\delta \right)$: narrow multiplet centered at 7.34

UV $\left(nm\right)$: $287\left(\in =25,000\right),305\left(\in =36,000\right),and326\left(\in =33,000\right)$