The ether layer left over from a work-up process was analyzed by GC-MS. The following peaks appeared on the spectrum.

The ether layer left over from a work-up process was analyzed by GC-MS. The following peaks appeared on the spectrum. Identify the compounds that cause peaks to appear on the mass spectrum at 156,154 and 78. If the ether layer contained a peak at 122, what compound would have caused that on the mass spectrum? If the compound is in the ether layer, what didn’t you do correctly?