[{"from": "human", "value": "Describe this molecule. [C][C][/C][=C][\\C][/C][=C][\\C][C][Branch1][S][/C][=C][/C][=C][\\C][/C][=C][\\C][C][C][C][=Branch1][C][=O][O][O][O]"}, {"from": "gpt", "value": "The molecule is a hydroperoxy fatty acid that is (5Z,8Z,10E,14Z,17Z)-icosapentaenoic acid in which the hydroperoxy group is located at the 12-position. It has a role as a platelet aggregation inhibitor. It is functionally related to an all-cis-5,8,11,14,17-icosapentaenoic acid. It is a conjugate acid of a 12-HPEPE(1-)."}]