$\mathrm{C}_{5} \mathrm{H}_{10} \mathrm{O}_{5}$

$\mathrm{C}_{6} \mathrm{H}_{10} \mathrm{O}_{6}$

$\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}$

$\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{5}$