C2H12O6\mathrm{C}_{2} \mathrm{H}_{12} \mathrm{O}_{6}C2H12O6
CH2O\mathrm{CH}_{2} \mathrm{O}CH2O
C2H2O\mathrm{C}_{2} \mathrm{H}_{2} \mathrm{O}C2H2O
C(H2O)6\mathrm{C}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}C(H2O)6