[{"from": "human", "value": "Could you provide a description of this molecule? [C][C][C][C][C][C][C][C][C][C][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a medium-chain fatty acid anion that is the conjugate base of undecanoic acid; used in tandem with testosterone cation in the treatment of male hypogonadism. Major species at pH 7.3. It has a role as a human metabolite. It is a medium-chain fatty acid anion and a straight-chain saturated fatty acid anion. It is a conjugate base of an undecanoic acid."}]