[{"from": "human", "value": "Describe this molecule. [C][C][C][C][C][/C][=C][\\C][C][=Branch1][C][=O][C][C][/C][=C][/C][=C][\\C@H1][Branch1][=Branch2][C][C][C][C][=Branch1][C][=O][O-1][O]"}, {"from": "gpt", "value": "The molecule is an icosanoid anion that is the conjugate base of 10,11-dihydro-12-oxoleukotriene B4, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of a 10,11-dihydro-12-oxoleukotriene B4."}]