C11H16O2\mathrm{C}_{11} \mathrm{H}_{16} \mathrm{O}_{2}C11H16O2
C15H24O\mathrm{C}_{15} \mathrm{H}_{24} \mathrm{O}C15H24O
C10H14O2\mathrm{C}_{10} \mathrm{H}_{14} \mathrm{O}_2C10H14O2
C6H8O7\mathrm{C}_{6} \mathrm{H}_{8} \mathrm{O}_{7}C6H8O7