[{"from": "human", "value": "Provide a brief overview of this molecule. [C][Branch1][=Branch2][C][C][C][C][C][C][C][O][C][C][C][C][C][C][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is an omega-hydroxy-lon-chain fatty acid anion that is the conjugate base of 15-hydroxypentadecanoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of a 15-hydroxypentadecanoic acid."}]