[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is a member of the class of pyrrolidin-2-ones that is 1,5-dimethylpyrrolidine-2,4-dione substituted by a 1-hydroxyhexadecylidene moiety at position 3. Isolated from the marine sponge Melophlus sarasinorum and other species of genus Melophlus, it exhibits cytotoxicity against murine leukemia cell line. It has a role as a metabolite and an antineoplastic agent. It is an enol and a member of pyrrolidin-2-ones."}, {"from": "gpt", "value": "[C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][=Branch1][C][=O][C][=C][Branch1][=N][C][Branch1][=Branch2][N][Branch1][Branch1][C][Ring1][Branch1][=O][C][C][O]"}]