The highlighted part of this molecule is derived from ...

The correct answer to the following question will be "Glycerol".

Explanation:

Glycerol is a pure group of polyols. It's a delicious-tasting, non-toxic, colorless, extremely flammable, gelatinous substance, also known as "Glycerine". The base of glycerol is located in lipids classified as glycerides. It is commonly used in FDA approved injury and wound therapies because it has antiviral and antimicrobial properties.

Therefore, it's the right answer.