A student performs combustion analysis on a compound X containing carbon, hydrogen, and oxygen to determine its molecular formula. Given the molar mass is 76, if she combusts 1 mole of X in excess oxygen and observes 2 moles of CO\({}{2}\) gas and 2 moles of H\({}{2}\)O gas as products, what is the molecular formula?
C\({}{2}\)H\({}{4}\)O\({}{3}\)