[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is an icosapentaenoate that is the conjugate base of all-cis-5,8,11,14,17-icosapentaenoic acid, arising from deprotonation of the carboxylic acid group. It has a role as a human metabolite. It is a conjugate base of an all-cis-5,8,11,14,17-icosapentaenoic acid."}, {"from": "gpt", "value": "[C][C][/C][=C][\\C][/C][=C][\\C][/C][=C][\\C][/C][=C][\\C][/C][=C][\\C][C][C][C][=Branch1][C][=O][O-1]"}]