[{"from": "human", "value": "Provide a description of this molecule. [C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][=Branch1][C][=O][O][C][Branch1][C][C][C][O][C][=Branch1][C][=O][C][C][C][C][C][C][C][C][C][C][C][C][C]"}, {"from": "gpt", "value": "The molecule is used as a food additive [EAFUS] (\"EAFUS: Everything Added to Food in the United States. [http://www.eafus.com/]\").\n\nPropylene glycol mono- and diesters of fats and fatty acids belongs to the family of Fatty Acid Esters. These are carboxylic ester derivatives of a fatty acid."}]