2. The following are the IR and mass spectrum for an unknown compound. Please propose two possible structures for this unknown compound and substantiate your proposal with reasoning from the data provided 80 20 4000 3500 3000 2500 2000 1500 1000 500 Wavenumber (cm-1) 100 80 60 20 230 40 50 60 70 8090 100 m/z