[{"from": "human", "value": "Describe this molecule. [C][C][C][C][C][=Branch1][C][=O][Se][C][C][C][C]"}, {"from": "gpt", "value": "The molecule is an organoselenium compound obtained by the formal condensation of butane-1-selenol with pentanoic acid. It has a role as a metabolite."}]