Complex sentence: In organic chemistry, vanillyl (also known as vanilloyl) is a functional group found in several compounds, including vanillin, vanillic acid, capsaicin and VMA.
Split into simpler sentences: In organic chemistry, vanillyl (also known as vanilloyl) is a functional group. Compounds containing a vanillyl group are called vanilloids, and include vanillin, vanillic acid, capsaicin and VMA.