Utilizing the attached IR spectrum, extract as much information as you can:

$1.)$ What functionalities$/$bonds can you confidently identify? Include vibrational mode $($Stretch$/$bend$/$wag etc.$)$ and wavenumber.

$2.)$ Does this spectra suggest the presence of any non$-C$ or $H$ heteroatoms? Explain your choice.

$3.)$ Do any of your observed vibrational modes match with$/$confirm specific bonds or functional groups? $1.$E$.$ Are there any stretches that have corresponding bends or other confirmatory modes?

$4.)($Extra credit$)$ Given nothing but this spectrum, attempt to guess the general structure of this molecule,