List of top Organic Chemistry Questions on Analytical Chemistry

The type(s) of chemically non-equivalent protons present in the following molecule is _ _ _. (answer in integer)

The $^1$H-NMR spectral data of a compound X is as follows: $\delta$ (ppm): 11.6 (s, 1H, exchangeable with D$_2$O), 7.60 (d, 1H, $J = 7.2$ Hz), 7.20 (t, 1H, $J = 7.2$ Hz), 6.90 (d, 1H, $J = 7.2$ Hz), 3.70 (s, 3H), 3.58 (s, 3H)Based on the spectral data, choose the appropriate structure for compound X.