C-06-Q108mediumsingle_mcqC = 40%, H = 6.67%, O = 53.33%. Empirical formula is—aCHObCH2O\mathrm{CH_2O}CH2OcC2H4O2\mathrm{C_2H_4O_2}C2H4O2dCH4\mathrm{CH_4}CH4