[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is an acyl tetraketide pyran-2-one that is 4-hydroxy-2H-pyran-2-one in which the hydrogen at position 6 is replaced by a 13-hydroxy-2-oxononadecyl group. It is a 6-(acylmethyl)-4-hydroxy-2H-pyran-2-one and a secondary alcohol."}, {"from": "gpt", "value": "[C][C][C][C][C][C][C][Branch2][Ring1][=C][C][C][C][C][C][C][C][C][C][C][C][=Branch1][C][=O][C][C][=C][C][=Branch1][=Branch2][=C][C][=Branch1][C][=O][O][Ring1][#Branch1][O][O]"}]