$C=12, H=1, O=16, N=14$

$\begin{array}{|l|c|c|}\text{ \textbf{H^^^^1ee3p ch^^^^1ea5t}} & \textbf{Li^^ean k^^^^1ebft} & \textbf{S^^^^1ed1 s^^f3ng \lparen cm}^{-1}\textbf{\rparen} \\ \text{ Alcohol} & \text{O-H} & 3500-3200 \\ \text{ Amine} & \text{N-H} & 3300-3000 \\ \text{ Aldehyde} & \text{C-H} & 2830-2695 \\ & \text{C=O} & 1740-1685 \\ \text{ Ketone} & \text{C=O} & 1715-1666 \\ \text{ Carboxylic acid} & \text{C=O} & 1760-1690 \\ & \text{O-H} & 3300-2500 \\ \text{Ester} & \text{C=O} & 1750-1715 \\ & \text{C-O} & 1300-1000 \\ & & \end{array}$