[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is a straight-chain, C18 polyunsaturated fatty acid having four conjugated C#C bonds at positions 9, 11, 13 and 15 as well as an (S)-hydroxy group at position 17. It has a role as an antimalarial, an antineoplastic agent and an antiviral agent. It is a tetrayne, a long-chain fatty acid, an acetylenic fatty acid, a straight-chain fatty acid and a hydroxy polyunsaturated fatty acid."}, {"from": "gpt", "value": "[C][C@@H1][Branch2][Ring1][Branch1][C][#C][C][#C][C][#C][C][#C][C][C][C][C][C][C][C][C][=Branch1][C][=O][O][O]"}]