Fentanyl is an important analgesic compound used in combination with other drugs for anesthesia. It is also a substance of abuse. The molecular formular for fentanyl is C2H23N2O. Calculate the hydrogen deficiency index for fetitanyl (show your work for full credit). 2. Infrared spectroscopy is a useful technique to distinguish between different functional geups ith organic molecules. Given the 1R spectra below, calculate the hydrogen deficiency index (show your work for full credit), ideatify the prominent functional group, and F C6H12O. a) Calculate the hydrogen deficiency index (show your work for full credit)