A compound gives a molecular ion in the mass spectrum at m/z 116. It shows five peaks in the carbon-13 nmr spectrum, at 175, 128, 123, 75, and 73 ppm, and DEPT shows that these correspond to a quaternary carbon, and CH, CH, CH_2 and CH_3 groups, respectively. The IR spectrum shows a broad peak ranging from 2200-3600 cm^-1, and a strong peak at 1720 cm^-1. Deduce a structure for this compound by answering the following questions: Deduce a molecular formula for this compound. What is the index of hydrogen deficiency (degrees of unsaturation) for this compound? What functional group(s) is/are present in this compound? Deduce a structure for this compound
